Mattresses and Accessories - Drive, Balanced Aire Powered Alternating Pressure Air/Foam Mattress, 35" W x 84" L : The Balanced Aire Self Adjusting foam/air mattress from Drive and Mason Medical provides excellent patient comfort as a powered, air-filled support surface. Providing the patient with the proper support they want and need while aiding in the prevention of pressure ulcers. The Balanced Aire's foam-filled air cells are arranged into three separate zones and are covered by two types of foam for ideal comfort. Plus, the alternating pressure pump converts the Balanced Aire to a dynamic powered system for even greater pressure redistribution and improved circulation.