Our most luxurious model offers the ultimate pressure-relieving back support for sufferers of back pain and aches with extra luxurious plushness on the surface. using All-USA materials from the Hypergel lifting support surface, to the Interlocking Double Zone Lumbar Support section, to the over 1,000-count, edge-support reinforced, individually wrapped, U.S. steel spring coils, the Back Science® Series 3 hybrid mattress provides the back support you've been looking for with the most luxurious and pressure-relieving surface.