This mattress system combines two clinically effective therapies: True low air loss and alternating pressure in a portable system. Includes mattress and pump. The mattress utilizes 18 independent 9" deep air cells to provide proper pressure redistribution for the prevention and treatment of stages I-IV pressure ulcers. User-friendly controls and ease of set-up make this system ideal for institutional use and the home-bound patient. The mattress is designed to fit all standard hospital beds.