The Sleep Philosophy Flexapedic 3 inch Gel Memory Foam Topper features a unique convoluted design to provide maximum air flow that along with the cooling gel infused memory foam provides the optimum in sleeping comfort. Along with keeping you cooler this topper helps to alleviate pressure points while the 2.5 lb. density temperature sensitive foam adjusts to your body temperature. Memory foam is resistant to dust mites and is naturally antimicrobial. The topper is also reversible if you prefer a flat sleeping surface.