This bed offers contouring, pressure-relieving comfort at the sleep surface while also supporting your body where it needs it most. The iComfort Sleep System by Serta features Cool Action™ Gel Memory Foam, infused with the support a cooling touch of Serta's MicroSupport™ gel. It delivers superior pressure relief and more targeted support while sleeping cooler than ordinary memory foam. The Insight mattress has 2-3/4" of CoolAction™ gel memory foam and 6" of ComfortLast™ foam core with Ultimate Edge™ to prevent roll-off or sag. You will experience the ultimate in pressure relieving comfort, proper back support, balanced sleeping temperature, and undisturbed sleep.