Experience xtra premium support and xtra perfect sleep with our new Serta® Perfect Sleeper X™ Collection. Our 5 ZoneResponse™ Design is comprised of Perfect Conform™ Memory Foam paired with 5-zoned coils for full-body alignment. Sleep comfortably cool throughout the night with cooling technology and graphite-infused memory foam designed to redistribute heat away from your body. Xtraordinary sleep is possible with Serta®Perfect Sleeper X™.