The Sleep Philosophy 1.5" Gel Memory Foam Mattress Topper features a unique convoluted design to provide maximum airflow that along with the cooling gel-infused memory foam, provides the optimum sleeping comfort. Along with keeping you cooler, this topper helps to alleviate pressure points while the 2.5 lbs. 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. Another feature you’ll appreciate is that the topper comes in full mattress sizes to give your bed end-to-end coverage.