Change the way you sleep for the better with Southerland's 3500 Firm mattress. The support core is made up of a HD Loft Pad and Alternating Open Coils that give you reduced roll off in addition to increased support and comfort. A layer of Comfort Foam not only provides extra comfort, but also helps lock in the comfort to keep the mattress feeling new. A Premium Knit Cover sits on top for extra protection and support. This mattress is ideal for stomach and back sleepers.