Proactive Protekt Aire 2000 Low Air Loss And Alternating Pressure Overlay System features five-inch mattress overlay that provides alternating pressure and low air loss therapies in one pump. It incorporates a system of 17 individual bladders. The pump offers a 10 minute cycle time and adjustable air flow settings to meet individual patients needs. This overlay is a perfect system to prevent and treat pressure ulcers. The pump is user friendly, reliable and quite.