King Serta iComfort Hybrid Applause II Firm Mattress Memory Foam Imported Helps reduce tossing and turning, which also relieves pressure points and decreases pain Helps keep you cool by drawing body heat away from the sleeping surface Top-of-the-line coil system that contours to the curves of your body and provides deep-down support Box spring sold separately Firm comfort and perfect for most back and stomach sleepers, but probably too firm for many side sleepers