This plush pillow top mattress features Serta’s new 711 Individually Wrapped Coil System featuring durable, flexible wrapped coils that react individually to every contour of your body. Plus, a layer of Serta® Comfort XD(TM) Foam gently cradles the body for enhanced pressure relieving comfort while Serta’s Cool Twist® Gel Foam provides enhanced, breathable comfort.This Sertapedic® mattress is compatible with a Serta® adjustable foundation.