This mattress provides both alternating pressure and low air loss to optimize pressure redistribution, shear/friction reduction and microclimate control. It is designed to help prevent, treat and heal pressure ulcers. The control unit offers 10 minute alternating cycles and adjustable patient weight settings provide optimal immersion and comfort. The removable nylon cover is fluid resistant, low shear and vapor permeable to protect the skin from friction and moisture. Weight capacity: 350 lbs.