Kingsdown’s Prime Collection delivers targeted lumbar support and the latest comfort innovations at an exceptional value. Each premium mattress features cooling gel fibers and Serene® foam, the self-adjusting alternative to memory foam that dissipates body heat quickly for a cooler, more comfortable night’s sleep. These cooling layers work in conjunction with our resilient latex foam and the reinforced lumbar zone in our Tri-Zoned Wrapped Coils to provide the pressure relief and personalized support that your body needs for deeper, more restful sleep. -Fresh Comfort® Quilt Cooling gel fibers on the surface of the mattress help maintain an ideal body temperature for healthier sleep -Serene® Foam This self-adjusting alternative to traditional memory foam provides lumbar support without compromising comfort and dissipates heat quickly for a cooler, more comfortable night’s sleep -Latex Foam Our luxurious latex delivers the ultimate in pressure relief and conformity. This resilient foam provides pressure-relieving support to your back for a more restful night’s sleep. -Tri-Zoned Wrapped Coils Works in three unique zones and provides extra lumbar support where the body needs it most. Each coil is individually wrapped to contour to the body and provide personalized support to both sleep partners. Select models feature reinforced perimeter coils for superior edge support.