Sleep cooler with the Graphene Elete Euro Top Collection of mattresses, with a special cooling fabric and Graphite Memory Foam. You'll feel the support of the individually wrapped coils as they adjust to your individual shape. A tri-zoned foam encasement provides lumbar support and 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 20 year warranty, what a value!