Unsurpassed Quality Sealy has the highest quality standard in the mattress industry. In fact, consumers rate Sealy Posturepedic ahead of the competition in terms of product quality and durability. Unmatchable Durability The box springs in Sealy sleep sets contain steel modules and a solid steel spine for increased support and durability. Its modules are resilient, meaning they "work" to absorb the shock of weight and motion. Incomparable Support for Your Back and Body The Sealy Posturepedic innerspring was designed in cooperation with leading orthopedic surgeons to provide correct support for your back and body. It's True, More Orthopedic Surgeons Sleep on a Sealy Posturepedic Mattress! Sealy Posturepedic mattresses feature the most advanced bedding technology in the bedding industry. Learn about more innovations. No Mattress Manufacturer Spends More on Research and Development (R&D) True, Sealy has more patents on mattress and box spring technologies than ANY other manufacturer. Learn how mattresses are made.