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. Also added are a layer of Perfect Comform Micro Coils to work in sync with the hybrid design, that responsivelycradles the contours of your body. Xtraordinary sleep is possible, with Serta Perfect Sleeper X