The CarbonCool® mattress introduces an exhilarating technology to your bed: Omniphase® material. Rated at 20-times the cooling capability of gel memory foam, this phase change material actively pulls heat away from the body, so you can rest within the optimal body temperature range of 87 to 91 degrees. A response foam layer and 9-inch supportive foam base provide pressure-relief and support of a quality memory foam mattress. Scientifically Advanced Sleep means that the latest breakthroughs in science make a more comfortable mattress. Comes with a 10-year warranty and is made in the USA.