From BodiPEDIC, this bed topper features: The cooling gel-infused soft support mattress topper from BodiPEDIC offers 4-inches of plush dough-like, supportive memory foam that contours to the body while helping to provide cushioned comfort. Soft gel-infused AeroFusion memory foam offers pressure-relieving support and cooling properties for comfortable sleep Built-in AeroFusion Ventilation Technology in the foam and breathable fabric for maximum air flow Luxury knit cover features a blend of polyester and ice fibers to add a soft, cooling layer of comfort Anti-skid bottom fabric helps to keep the topper in place Memory foam fill Queen approx. 80" L x 60" W x 4" H; weight 26.4 lbs. King approx. 80" L x 75" W x 4" H; weight 32.9 lbs. Remove cover to machine wash and dry. Spot clean inner foam only. Do not machine wash or dry. Use mild detergent, no chlorine bleach. Allow to air dry away from direct sunlight and heat. 5- year limited manufacturer's warranty Top: 53% Polyester, 47% Polyethylene; Gusset: 100% Polyester; Bottom: 80% Polyester, 20% Cotton Imported.