Mattresses and Accessories - Drive, Med-Aire Assure 5" Air with 3" Foam Base Alternating Pressure and Low Air Loss Mattress System : Designed to prevent, treat and manage pressure ulcers in the home or long term care setting, the Med-Aire Assure combination therapy mattress system provides both alternating pressure and low air loss to optimize pressure redistribution and manage skin maceration. The Med-Aire Assure incorporates a system of eighteen 5" individual bladders over a 3" foam base. The pump offers a static feature as well as adjustable comfort settings by patient weight. The removable cover is quilted for comfort, low shear, anti-microbial, water-resistant and vapor permeable. Plus, a CPR valve allows for rapid deflation.