The Sealy Posturepedic Holly Spring Firm is a high quality firm mattress at a low price. This Reserve series mattress offers sophisticated memory foam, 3 zone pressure relief inlays, twice as much edge support than the preferred series and an exclusive breathable cover so you can sleep peacefully through the night. Eliminate pressure with the Sealy Posturepedic coil support system developed by orthopedic surgeons that is sure to give your body the support it needs.