A Kingsdown Prime mattress includes a level of quality and features not found in other mattresses in this price range making Prime an exceptional value. Cooling gel fibers and a multilevel coil system provide the pressure relief and support your body needs. Infused cooling gel technology Quilted comfort fabric Individually wrapped, edge-to-edge coil system Innovative mattress design Fresh Comfort® quiltA luxurious touch on the quilted surface of every Kingsdown Prime includes cooling gel fibers and specialized quilting foam to regulate body temperature.Gel foam The Prime mattress collection includes specialized gel foam to deliver additional lumbar support, essential for healthier sleep. Multi-level support systemFoam comfort layers found in Prime mattresses are enriched by resilient micro coils to provide body-conforming support. Individually wrapped coilsFabric-encased coils are engineered to conform to your body and provide lasting support while reducing motion transfer.Perimeter coilsA Prime mattress features edge-to-edge support with a reinforced coil system for a consistent sleep surface.Hybrid mattresses Hybrid mattresses tend to walk the line between firmness and softness. This is because innerspring mattresses are usually very firm and supportive, while memory foam mattresses are softer and with more sinkage.