Three layers of exclusive pressure-relieving foams paired with an ultra-supportive coil system deliver cradling pressure-relieving support under a cool-to-the-touch sleep surface with anti-microbial technology. Perfect Sleeper® Retreat Cove offers enhanced pressure-relieving comfort thanks to three layers of exclusive Serta® foams HexCloud Gel Memory Foam WonderCould Memory Foam and BubbleCloud Foam and the 1000 Edition Custom Support Coil System. This top-of-the-line mattress delivers the ultimate comfort experience with the bonus of an anti-microbial cool-to-the-touch sleep surface to help you get the restorative sleep youve been missing. "CoolFeel Fabric: A luxurious breathable cover with a cool-to-touch sensation from technology that is plant derived*. *Our biobased phase change material consists of 53% biobased content and is certified through the USDA BioPreffered® Program."