The latest breakthrough in science creates a more comfortable mattress. CarbonCool combines the outstanding thermal conductivity of graphite-infused memory foam with the temperature regulation of Omniphase phase change material to ensure the optimum sleep temperature through the night. This 14-inch mattress has a 3-inch layer of CarbonCool + Omniphase infused memory foam at the surface for advanced temperature control. A response foam layer and 9-inch supportive foam base provide pressure-relief and support of a quality memory foam mattress.