TEMPURCloud Prima Medium-Soft Mattress, King 10-inch thick medium-soft mattress formulated from temperature-features material to provide support for your body and helps distribute body weight evenly across the mattress Designed with a comfort layer made from highly conforming temperature-features material to determine the feel of the mattress and works to allow for personalized comfort and support The SmartClimate System helps you stay comfortable during the night to draw moisture away, while the SmartClimate treatment in the inner cover provides cool to-the-touch comfort Designed with a high-loft, super-stretch premium fabric cover with grey upholstered sides The base layer of the mattress serves as the base for the temperature material above it, and is also designed to help disperse heat from the mattress