Those who benefit from the deep down support of a firm mattress but enjoy a bit of cushioning at the sleep surface will enjoy the Sealy Coastal Mist mattress set. Layered on top of Sealy's classic coil innerspring system is a body contouring Memory Foam CoreSupport Center topped with thick layers of high density SuperSoft ActiveFlex and ActiveFlex foam. These premium foams work to ease pressure points while providing firm support tailored to your body's unique shape. Additional layers of HyperSoft convoluted foam in the quilting adds another source of comfort right at the sleep surface to help you ease into a truly restful night's sleep. 10 Year Non-Prorated Warranty.