99% Polyester, 1% Spandex SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most MEDIUM FEEL: Offers a balanced level of comfort and support, combining a soft, cushioning feel with the right amount of firmness to promote restful sleep CERTIPUR-US CERTIFIED: The Sealy Dreamlife mattress foam meets the strict standards set by CertiPUR-US, ensuring it is made without certain harmful chemicals including formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, or mercury, lead or other heavy metals. 1-YEAR LIMITED WARRANTY: Rest assured with reliable comfort, this memory foam mattress topper is backed by Sealy’s rigorous product testing for exceptional quality and long-lasting durability DESIGNED AND BUILT IN THE USA: Sealy products have been expertly designed, manufactured, and tested in the USA since 1881, delivering quality you can trust