The Perfect Sleeper Statement Premium Plus Collection of mattresses are designed to let you fall asleep faster and keep you sleeping longer. Each mattress is supported by Individually Wrapped Coils, featuring a lumbar support core, and surrounded by Serta's Total Edge® Foam Encasement. Then layers of comfort foam including Serta's CoolAction Gel Memory Foam, soothe you as you fall into a deep sleep. Comfort Luxe Gel Fibre® at the surface helps you sleep cooler and longer.