The Beautyrest Reliant Firm is perfect for stomach and back sleepers, and for anyone who wants a firm feel at a great price. This mattress has the Beautyrest 800 Pocketed Coil Unit, which conforms to the curves in your body and keeps motion from transferring across the mattress. The Reliant Firm also has a Gel Memory Foam Lumbar Support, which provides extra lower back support and also increases durability. This mattress has a 10 year warranty, and is approved for use on adjustable bases. The Beautyrest Reliant Firm is a solid bed at a great value.