Experience xtra premium support and xtra perfect sleep with our new Serta® Perfect Sleeper X™ Collection. Our 5 ZoneActive™ Design promotes full-body spinal alignment for xtra support. Sleep comfortably cool throughout the night with xtra cooling technology and graphite-infused Perfect Conform™ Memory Foam designed to redistribute heat away from your body. Xtraordinary sleep is possible, with Serta® Perfect Sleeper X™Cool Twist® Gel Memory Foam Cooling gel swirled into premium memory foam offers enhanced airflow, heat dissipation, and contouring comfort. Available in select modelsPerfect Conform™ Memory Foam Premium, graphite-infused memory foam designed to provide targeted pressure relief and redistribute heat away from the bodyEverCool® Supreme Memory Foam A dynamic combination of cooling gel and premium memory foam to cradle and cool you in a pressure-relieving embrace. Available in select models