The Xact® Lite introduces a new technology in lightweight cushions. At 3.2 lbs., the XACT Lite offers the active user excellent pressure reduction and exceptional anti-shearing properties. The Akton® polymer-textured overlay, on a contoured multi-layered foam base, promotes therapeutic positioning and comfort. The key element in our products is an exclusive material called AKTON® Viscoelastic polymer. No one has AKTON polymer but us, and it is a wondrous material. It looks and feels like a gel, but is more body friendly. It does not leak, flow or bottom out. The best part is that it is repairable! The film is tissue equivalent, and together with the polymer, creates the most shear resistant product on the market today. Since it is reusable, it helps environmentally, economically, and of course clinically. The perfect package. If you have any questions regarding this item please call (800)355-2956.