Mattresses and Accessories - Drive, Med Aire Low Air Loss Mattress Overlay System, with APP, 5" : The product is designed to be used in the prevention, treatment and management of pressure ulcers. The newly designed pump produces consistent air flow and has LED indicators to identify normal/low pressure levels. This mattress overlay achieves low air loss, increases patient comfort and keeps the patient cool. Spring lined air tube prevents kinks and disruption in air flow. The nylon cover is water resistant, vapor permeable, machine washable and it can be secured to the mattress with straps.