Foam TWIN MATTRESS ENHANCER: Gel-swirl mattress topper provides a simple solution to enhance any sleep surface with an added layer of comfort and support. SealyChill GEL-INFUSED MEMORY FOAM: Gel-infused memory foam helps provide adaptive comfort and support, plus promotes a cooler sleep experience. EASY SET UP: Topper comes conveniently compressed and packaged for easy transport and set up. Unbox the topper, unroll it, and lay it flat on top of your mattress for a more comfortable sleep within minutes. CertiPUR CERTIFIED: This mattress topper foam is CertiPUR-US certified meaning it is made without ozone-depleting chemicals. MADE IN THE USA: Proudly made in the USA and backed by over 130 years of Sealy quality.