<SEC-DOCUMENT>0001206264-17-000078.txt : 20170515
<SEC-HEADER>0001206264-17-000078.hdr.sgml : 20170515
<ACCEPTANCE-DATETIME>20170515171230
ACCESSION NUMBER:		0001206264-17-000078
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170511
FILED AS OF DATE:		20170515
DATE AS OF CHANGE:		20170515

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:		17845734

	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_149488273178852.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-05-11</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>2017-05-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2638</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10918</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Each deferred stock unit represents the right to receive one share of common stock of the issuer at the end of the deferral period described below. Pursuant to the award agreement, the deferred stock units vest in four installments, with 660 units vesting on each of July 31, 2017 and October 31, 2017 and 659 units vesting on each of January 31, 2018 and the last day before the 2018 Annual Meeting of Stockholders. The vested shares will be delivered to the reporting person on May 11, 2020, unless an election is made by the reporting person to defer receipt of such shares to a later date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jon L. Luther</signatureName>
        <signatureDate>2017-05-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
