Sealy's Comfort Series Gel Memory Foam has the ability to conform to your unique body shape and weight while providing a gentle cooling sensation. This comforting, body-hugging quality creates the sense that your sleeping "in" your mattress and not just "on" it while at the same time helping to keep your body temperature within the optimum range for deep, relaxing, restorative sleep. The layer below the Gel memory foam is memory foam that delivers conforming support as it enfolds and embraces your body. Beneath the memory foam is a Polycore support system that provides proper body alignment. These Gel Memory Foam mattresses are terrific values!