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<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
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  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_ck0001540305_AssetAllocationRiskMember_label_en-US" xlink:label="lab_ck0001540305_AssetAllocationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Allocation Risk Member</link:label>
    <link:label id="lab_ck0001540305_AssetAllocationRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_AssetAllocationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Asset Allocation Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_AssetAllocationRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_AssetAllocationRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_AssetAllocationRiskMember" xlink:to="lab_ck0001540305_AssetAllocationRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Duration Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Duration Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskDurationRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Call Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Call Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskCallRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Extension Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Extension Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskExtensionRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_IlliquidInvestmentsRisksMember_label_en-US" xlink:label="lab_ck0001540305_IlliquidInvestmentsRisksMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Illiquid Investments Risks Member</link:label>
    <link:label id="lab_ck0001540305_IlliquidInvestmentsRisksMember_documentation_en-US" xlink:label="lab_ck0001540305_IlliquidInvestmentsRisksMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Illiquid Investments Risks Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_IlliquidInvestmentsRisksMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_IlliquidInvestmentsRisksMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_IlliquidInvestmentsRisksMember" xlink:to="lab_ck0001540305_IlliquidInvestmentsRisksMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember_label_en-US" xlink:label="lab_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ETF Risks, Costs Of Buying Or Selling Shares Risk Member</link:label>
    <link:label id="lab_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ETF Risks, Costs Of Buying Or Selling Shares Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember" xlink:to="lab_ck0001540305_ETFRisksCostsOfBuyingOrSellingSharesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_MLPRiskMember_label_en-US" xlink:label="lab_ck0001540305_MLPRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MLP Risk Member</link:label>
    <link:label id="lab_ck0001540305_MLPRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_MLPRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">MLP Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_MLPRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_MLPRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_MLPRiskMember" xlink:to="lab_ck0001540305_MLPRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Maturity Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Maturity Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskMaturityRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_C000202353Member_label_en-US" xlink:label="lab_ck0001540305_C000202353Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ClearShares Ultra-Short Maturity ETF Class</link:label>
    <link:label id="lab_ck0001540305_C000202353Member_documentation_en-US" xlink:label="lab_ck0001540305_C000202353Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ClearShares Ultra-Short Maturity ETF, C000202353, Class</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_C000202353Member" xlink:href="ck0001540305-20260925.xsd#ck0001540305_C000202353Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_C000202353Member" xlink:to="lab_ck0001540305_C000202353Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Prepayment Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Prepayment Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskPrepaymentRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Interest Rate Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Interest Rate Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskInterestRateRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember_label_en-US" xlink:label="lab_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ETF Risks, Authorized Participants, Market Makers, And Liquidity Providers Concentration Risk Member</link:label>
    <link:label id="lab_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ETF Risks, Authorized Participants, Market Makers, And Liquidity Providers Concentration Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:to="lab_ck0001540305_ETFRisksAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ETFRisksTradingRiskMember_label_en-US" xlink:label="lab_ck0001540305_ETFRisksTradingRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ETF Risks, Trading Risk Member</link:label>
    <link:label id="lab_ck0001540305_ETFRisksTradingRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ETFRisksTradingRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ETF Risks, Trading Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ETFRisksTradingRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ETFRisksTradingRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ETFRisksTradingRiskMember" xlink:to="lab_ck0001540305_ETFRisksTradingRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_MunicipalSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0001540305_MunicipalSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Municipal Securities Risk Member</link:label>
    <link:label id="lab_ck0001540305_MunicipalSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_MunicipalSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Municipal Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_MunicipalSecuritiesRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_MunicipalSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_MunicipalSecuritiesRiskMember" xlink:to="lab_ck0001540305_MunicipalSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_CurrencyExchangeRateRiskMember_label_en-US" xlink:label="lab_ck0001540305_CurrencyExchangeRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency Exchange Rate Risk Member</link:label>
    <link:label id="lab_ck0001540305_CurrencyExchangeRateRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_CurrencyExchangeRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Currency Exchange Rate Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_CurrencyExchangeRateRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_CurrencyExchangeRateRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_CurrencyExchangeRateRiskMember" xlink:to="lab_ck0001540305_CurrencyExchangeRateRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ValuationRiskMember_label_en-US" xlink:label="lab_ck0001540305_ValuationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Valuation Risk Member</link:label>
    <link:label id="lab_ck0001540305_ValuationRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ValuationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Valuation Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ValuationRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ValuationRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ValuationRiskMember" xlink:to="lab_ck0001540305_ValuationRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ManagementRiskMember_label_en-US" xlink:label="lab_ck0001540305_ManagementRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Management Risk Member</link:label>
    <link:label id="lab_ck0001540305_ManagementRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ManagementRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Management Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ManagementRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ManagementRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ManagementRiskMember" xlink:to="lab_ck0001540305_ManagementRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_CoveredCallOptionsRiskMember_label_en-US" xlink:label="lab_ck0001540305_CoveredCallOptionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Covered Call Options Risk Member</link:label>
    <link:label id="lab_ck0001540305_CoveredCallOptionsRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_CoveredCallOptionsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Covered Call Options Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_CoveredCallOptionsRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_CoveredCallOptionsRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_CoveredCallOptionsRiskMember" xlink:to="lab_ck0001540305_CoveredCallOptionsRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_GovernmentObligationsRiskMember_label_en-US" xlink:label="lab_ck0001540305_GovernmentObligationsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Obligations Risk Member</link:label>
    <link:label id="lab_ck0001540305_GovernmentObligationsRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_GovernmentObligationsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Obligations Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_GovernmentObligationsRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_GovernmentObligationsRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_GovernmentObligationsRiskMember" xlink:to="lab_ck0001540305_GovernmentObligationsRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_C000186111Member_label_en-US" xlink:label="lab_ck0001540305_C000186111Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ClearShares OCIO ETF Class</link:label>
    <link:label id="lab_ck0001540305_C000186111Member_documentation_en-US" xlink:label="lab_ck0001540305_C000186111Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ClearShares OCIO ETF, C000186111, Class</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_C000186111Member" xlink:href="ck0001540305-20260925.xsd#ck0001540305_C000186111Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_C000186111Member" xlink:to="lab_ck0001540305_C000186111Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_RatingAgenciesRisksMember_label_en-US" xlink:label="lab_ck0001540305_RatingAgenciesRisksMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rating Agencies Risks Member</link:label>
    <link:label id="lab_ck0001540305_RatingAgenciesRisksMember_documentation_en-US" xlink:label="lab_ck0001540305_RatingAgenciesRisksMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Rating Agencies Risks Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_RatingAgenciesRisksMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_RatingAgenciesRisksMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_RatingAgenciesRisksMember" xlink:to="lab_ck0001540305_RatingAgenciesRisksMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_SectorRiskMember_label_en-US" xlink:label="lab_ck0001540305_SectorRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sector Risk Member</link:label>
    <link:label id="lab_ck0001540305_SectorRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_SectorRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sector Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_SectorRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_SectorRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_SectorRiskMember" xlink:to="lab_ck0001540305_SectorRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Variable And Floating Rate Instrument Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Variable And Floating Rate Instrument Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskVariableAndFloatingRateInstrumentRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_AgencyDebtRiskMember_label_en-US" xlink:label="lab_ck0001540305_AgencyDebtRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Agency Debt Risk Member</link:label>
    <link:label id="lab_ck0001540305_AgencyDebtRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_AgencyDebtRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Agency Debt Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_AgencyDebtRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_AgencyDebtRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_AgencyDebtRiskMember" xlink:to="lab_ck0001540305_AgencyDebtRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ETFRisksMember_label_en-US" xlink:label="lab_ck0001540305_ETFRisksMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ETF Risks Member</link:label>
    <link:label id="lab_ck0001540305_ETFRisksMember_documentation_en-US" xlink:label="lab_ck0001540305_ETFRisksMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ETF Risks Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ETFRisksMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ETFRisksMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ETFRisksMember" xlink:to="lab_ck0001540305_ETFRisksMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_C000222120Member_label_en-US" xlink:label="lab_ck0001540305_C000222120Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ClearShares Piton Intermediate Fixed Income ETF Class</link:label>
    <link:label id="lab_ck0001540305_C000222120Member_documentation_en-US" xlink:label="lab_ck0001540305_C000222120Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ClearShares Piton Intermediate Fixed Income ETF, C000222120, PIFI</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_C000222120Member" xlink:href="ck0001540305-20260925.xsd#ck0001540305_C000222120Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_C000222120Member" xlink:to="lab_ck0001540305_C000222120Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_SecuritiesLendingRiskMember_label_en-US" xlink:label="lab_ck0001540305_SecuritiesLendingRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Securities Lending Risk Member</link:label>
    <link:label id="lab_ck0001540305_SecuritiesLendingRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_SecuritiesLendingRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Securities Lending Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_SecuritiesLendingRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_SecuritiesLendingRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_SecuritiesLendingRiskMember" xlink:to="lab_ck0001540305_SecuritiesLendingRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_HighYieldSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0001540305_HighYieldSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">High-Yield Securities Risk Member</link:label>
    <link:label id="lab_ck0001540305_HighYieldSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_HighYieldSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">High-Yield Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_HighYieldSecuritiesRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_HighYieldSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_HighYieldSecuritiesRiskMember" xlink:to="lab_ck0001540305_HighYieldSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Credit Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Credit Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskCreditRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_S000069643Member_label_en-US" xlink:label="lab_ck0001540305_S000069643Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ClearShares Piton Intermediate Fixed Income ETF</link:label>
    <link:label id="lab_ck0001540305_S000069643Member_documentation_en-US" xlink:label="lab_ck0001540305_S000069643Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ClearShares Piton Intermediate Fixed Income ETF Series, S000069643</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_S000069643Member" xlink:href="ck0001540305-20260925.xsd#ck0001540305_S000069643Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_S000069643Member" xlink:to="lab_ck0001540305_S000069643Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_RepurchaseAgreementRiskMember_label_en-US" xlink:label="lab_ck0001540305_RepurchaseAgreementRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repurchase Agreement Risk Member</link:label>
    <link:label id="lab_ck0001540305_RepurchaseAgreementRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_RepurchaseAgreementRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Repurchase Agreement Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_RepurchaseAgreementRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_RepurchaseAgreementRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_RepurchaseAgreementRiskMember" xlink:to="lab_ck0001540305_RepurchaseAgreementRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember_label_en-US" xlink:label="lab_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ETF Risks, Shares May Trade At Prices Other Than NAV Risk Member</link:label>
    <link:label id="lab_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ETF Risks, Shares May Trade At Prices Other Than NAV Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember" xlink:to="lab_ck0001540305_ETFRisksSharesMayTradeAtPricesOtherThanNAVRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_MortgageBackedSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0001540305_MortgageBackedSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mortgage-Backed Securities Risk Member</link:label>
    <link:label id="lab_ck0001540305_MortgageBackedSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_MortgageBackedSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mortgage-Backed Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_MortgageBackedSecuritiesRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_MortgageBackedSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_MortgageBackedSecuritiesRiskMember" xlink:to="lab_ck0001540305_MortgageBackedSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ETFRisksCashRedemptionRiskMember_label_en-US" xlink:label="lab_ck0001540305_ETFRisksCashRedemptionRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ETF Risks, Cash Redemption Risk Member</link:label>
    <link:label id="lab_ck0001540305_ETFRisksCashRedemptionRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_ETFRisksCashRedemptionRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ETF Risks, Cash Redemption Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ETFRisksCashRedemptionRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ETFRisksCashRedemptionRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ETFRisksCashRedemptionRiskMember" xlink:to="lab_ck0001540305_ETFRisksCashRedemptionRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_EquityMarketRiskMember_label_en-US" xlink:label="lab_ck0001540305_EquityMarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Market Risk Member</link:label>
    <link:label id="lab_ck0001540305_EquityMarketRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_EquityMarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity Market Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_EquityMarketRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_EquityMarketRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_EquityMarketRiskMember" xlink:to="lab_ck0001540305_EquityMarketRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_SmallAndMidSizedCompanyStockRiskMember_label_en-US" xlink:label="lab_ck0001540305_SmallAndMidSizedCompanyStockRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Small And Mid-Sized Company Stock Risk Member</link:label>
    <link:label id="lab_ck0001540305_SmallAndMidSizedCompanyStockRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_SmallAndMidSizedCompanyStockRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Small And Mid-Sized Company Stock Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_SmallAndMidSizedCompanyStockRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_SmallAndMidSizedCompanyStockRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_SmallAndMidSizedCompanyStockRiskMember" xlink:to="lab_ck0001540305_SmallAndMidSizedCompanyStockRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember_label_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Event Risk Member</link:label>
    <link:label id="lab_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Income Securities Risk, Event Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember" xlink:to="lab_ck0001540305_FixedIncomeSecuritiesRiskEventRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember_label_en-US" xlink:label="lab_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ICE BofA U.S. Broad Market Index (reflects no deduction for fees, expenses, or taxes)</link:label>
    <link:label id="lab_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember_documentation_en-US" xlink:label="lab_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ICE BofA U.S. Broad Market Index (reflects no deduction for fees, expenses, or taxes)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember" xlink:to="lab_ck0001540305_ICEBofAUSBroadMarketIndexreflectsnodeductionforfeesexpensesortaxesIndexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_S000062383Member_label_en-US" xlink:label="lab_ck0001540305_S000062383Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ClearShares Ultra-Short Maturity ETF</link:label>
    <link:label id="lab_ck0001540305_S000062383Member_documentation_en-US" xlink:label="lab_ck0001540305_S000062383Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ClearShares Ultra-Short Maturity ETF Series, S000062383, Series</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_S000062383Member" xlink:href="ck0001540305-20260925.xsd#ck0001540305_S000062383Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_S000062383Member" xlink:to="lab_ck0001540305_S000062383Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_REITInvestmentRiskMember_label_en-US" xlink:label="lab_ck0001540305_REITInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">REIT Investment Risk Member</link:label>
    <link:label id="lab_ck0001540305_REITInvestmentRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_REITInvestmentRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">REIT Investment Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_REITInvestmentRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_REITInvestmentRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_REITInvestmentRiskMember" xlink:to="lab_ck0001540305_REITInvestmentRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mortgage- And Asset-Backed Securities Risk Member</link:label>
    <link:label id="lab_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mortgage- And Asset-Backed Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember" xlink:to="lab_ck0001540305_MortgageAndAssetBackedSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0001540305_MarketRiskMember_label_en-US" xlink:label="lab_ck0001540305_MarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Market Risk Member</link:label>
    <link:label id="lab_ck0001540305_MarketRiskMember_documentation_en-US" xlink:label="lab_ck0001540305_MarketRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Market Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0001540305_MarketRiskMember" xlink:href="ck0001540305-20260925.xsd#ck0001540305_MarketRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0001540305_MarketRiskMember" xlink:to="lab_ck0001540305_MarketRiskMember" xlink:type="arc" order="1"/>
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