The Sleep Philosophy 3" memory foam mattress topper features a unique design with two separate layers of pressure relieving temperature control memory foam.This topper helps to alleviate pressure points as the temperature control foam constantly adjusts to your body temperature. The first layer consists of a breathable 100% rayon circular knit cover that’s filled with 1" of 2.8 pound density memory foam. Under that is the base layer, 2" of 2.5 pound density ventilated memory foam for the ultimate in sleeping comfort.Our cover features Repel-O-Tex® technology to provide a water repellent and stain resistant surface for unmatched effectiveness in stain removal and protection. Included is Microban® technology to provide an added level of protection against bacteria, mold, and mildew that can cause stains, odors and deterioration. Memory foam is also resistant to dust mites and is naturally antimicrobial.A non-skid backing locks the comforter in place on your mattress. Another key feat