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 Medium Mattress. Its Response Pro Hd Encased Coil System delivers targeted pressure relief backed by firm SealySupport Gel Foam, creating a sleep surface that is supportive and sumptuous, providing for a medium-firm yet comfortable sleep throughout the night.