Sleep cooler with the Copper Cool Hybrid Collection of mattresses, with a special cooling fabric and Cool-Bounce Copper Gel Memory Foam which actively moves heat away from you. You'll feel the support of the individually wrapped coils as they adjust to your individual shape. A foam encasement provides a firm edge for full surface use. Comfort layers include responsive Gel Memory Foam which conforms to your body for customized support with out the sunk in feeling. All this, plus made in the USA and a 10 year warranty, what a value!