<SEC-DOCUMENT>0001206264-17-000087.txt : 20170516
<SEC-HEADER>0001206264-17-000087.hdr.sgml : 20170516
<ACCEPTANCE-DATETIME>20170516172859
ACCESSION NUMBER:		0001206264-17-000087
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170515
FILED AS OF DATE:		20170516
DATE AS OF CHANGE:		20170516

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TEMPUR SEALY INTERNATIONAL, INC.
		CENTRAL INDEX KEY:			0001206264
		STANDARD INDUSTRIAL CLASSIFICATION:	HOUSEHOLD FURNITURE [2510]
		IRS NUMBER:				331022198
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1000 TEMPUR WAY
		CITY:			LEXINGTON
		STATE:			KY
		ZIP:			40511
		BUSINESS PHONE:		800-878-8889

	MAIL ADDRESS:	
		STREET 1:		1000 TEMPUR WAY
		CITY:			LEXINGTON
		STATE:			KY
		ZIP:			40511

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TEMPUR PEDIC INTERNATIONAL INC
		DATE OF NAME CHANGE:	20031202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TWI HOLDINGS INC
		DATE OF NAME CHANGE:	20021119

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LUTHER JON L
		CENTRAL INDEX KEY:			0001208382

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31922
		FILM NUMBER:		17849636

	MAIL ADDRESS:	
		STREET 1:		410 OLD TOWNE LANE
		CITY:			JUNO BEACH
		STATE:			FL
		ZIP:			33408
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_149497012509603.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-05-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001206264</issuerCik>
        <issuerName>TEMPUR SEALY INTERNATIONAL, INC.</issuerName>
        <issuerTradingSymbol>TPX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001208382</rptOwnerCik>
            <rptOwnerName>LUTHER JON L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>410 OLD TOWNE LANE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>JUNO BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33408</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-05-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2750</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>48.4518</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13668</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This price is the weighted average purchase price for the transactions on this line. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jon L. Luther</signatureName>
        <signatureDate>2017-05-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
