Sarah Peyton Convection Cooled 8-Inch Firm Support Memory Foam Mattress, California King The"Convection Cooled" memory foam mattress is composed of a unique, ventilated design to keep you cool throughout the night Wake up feeling refreshed and ready for the day with this mattress smart design The mattress is comprised of three different layers which, together, combine to make a peaceful sanctuary every night The top 2-inch contains plush memory foam that cradles you to sleep. The 3-inch "Convection Cooled" core layer has passages which displace warm air with cool air making the mattress cooler than others. The high-density base layer is 3-inch and provides long-lasting support eliminating back pain and motion transfer