The quilt layer features TENCEL™ fabric, a sustainably sourced fiber used in athletic wear, designed to wick away moisture and keep you comfortable. PrimaSense Memory Foam works with five and a half inches of Premium Gel Foam comfort layers to deliver an elevated feel. Our one-of-a-kind IntelliCoil® Advanced innerspring design, with densely packed coils provides even more adaptive support  for every type of sleeper. The vented PrecisionEdge innovative system of firmer coils offers better support than a hardened foam edge with improved breathability and a longer more durable lifespan. Ventilated coil systems work with external AirVents to help prevent heat build-up in your mattress to promote cool, comfortable deep slumber throughout the night.