The LUMEX Select Convertible Mattress provides outstanding pressure displacement and redistribution to assist in the prevention and treatment of stage I through IV pressure ulcers. Features: • Closed System (Static Air) can quickly convert to an Alternating Pressure Mattress • Eight non-circular cylinders prevent ";rolling"; or ";gapping";* and are fully enclosed in a fiber mesh sleeve and jacket • Air control unit is simple, quiet and set at the optimum 10 minute cycle to eliminate guesswork for the caregiver • 2.5"; Hybrid Visco-elastic top layer does not raise body heat as with standard visco-elastic foam • Stretch cover is fluid resistant, air-permeable (breathable) and reduces friction and patient shear Use of the Lumex Select Convertible will eliminate the need for: • costly rental and storage of mattresses that are only used on an as needed basis • moving and transporting mattresses from room to room • overlays that are low in profile and do not provide adequate support or therapeutic benefit