The Wondertech® 10” Memory Foam Mattress is three layers of foam encased in a cooling cover. The top layer is a premium memory foam that conforms and cradles your body while aiding in pressure relief. The middle layer of high-density support foam is that all important transitional layer that brings both comfort and support while the high-density base foam layer provides stability. Finally, the cool-to-the touch cover with Wondertech® cooling fabric helps to release heat quickly, allowing you to remain cool and comfortable all night. The Wondertech® cooling fabric also pulls moisture away from your skin, resulting in quicker evaporation and an even greater cooling effect. The cover is also anti-microbial, helping to protect your mattress from bacterial growth.