King Serta Perfect Sleeper®
The Serta Perfect Sleeper® Grand Sky mattress features Cool Twist™ Gel Foam, Cool Balance® Elite fabric & EverCool® Memory Foam to regulate your body temperature to keep you comfortable as you sleep. The Custom Support® Individual Advantage™ 886 innerspring support system features ventilated wrapped carbon steel coils. These coils are made with TueSense™ 4.0 technology, allowing the coils to move independently in 4 directions, providing the ultimate in personalized comfort with minimal disturbance from partner movements. Last, but not least, this mattress features ComfortLast + Total Edge® Foam Encasement that is designed to enhance the durability of the mattresses to resist sagging and edge roll-off.