The Sleep Philosophy 4 in. Memory Foam Topper transforms your bed into a luxury retreat-with 2 in. cooling gel memory foam (2.5 lb. density) for perfect temp control and 2 in. high-density foam for extra support, it eases pressure points, relaxes muscles, and keeps you cool all night. It's Oeko-Tex Certified (no harsh chemicals), naturally antimicrobial/hypoallergenic, and comes with a 3 M Scotchgard zippered cover (moisture/stain-resistant, anti-slip) that's machine washable for easy care. Slightly oversized for full bed coverage, it's compressed in one box for easy shipping-unbox, unroll, and it expands to full shape in 72 hours, upgrading your sleep at a fraction of a new mattress cost. Material: Polyester.