Bring to your bedroom a most supportive and comfortable sleep surface at night. Sealy caters to stomach and back sleepers with its Premium Posturpedic Castlewood Ultra Firm Mattress. Its Response Pro Hd Encased Coil System delivers targeted pressure relief backed by firm SealySupport Gel Foam, creating a sleep surface that is exceptionally supportive and sumptuous, providing for a most firm and comfortable sleep throughout the night.