The Sleep Philosophy 3" Gel Memory Foam Topper features a unique hole punch design to provide maximum airflow, that along with the cooling gel-infused memory foam, providing the ultimate in sleeping comfort. Along with keeping you cooler, this topper helps to alleviate pressure points while the 2.5 lb. density temperature control foam adjusts to your body temperature. Memory foam is also resistant to dust mites and is naturally antimicrobial.Our topper also comes with a zippered removable cover that features a unique fabrication that's always "crisp and cool to the touch". In addition, it has a mesh gusset to allow for even more airflow while you sleep. A non-skid backing locks the topper in place on your mattress. Another feature we know you�ll appreciate is that our slightly oversized topper comes in full mattress sizes to give your bed end-to-end coverage. Our packaging technology allows the mattress topper to be efficiently compressed into one box that's easily shipped to your door. Simply unbox, unroll, and this mattress topper does the rest, expanding to its original shape within 72 hours.