The product is designed to be used in the prevention, treatment and management of Pressure Ulcers. Mattress operates in an alternating pressure mode. Ideal for use in hospitals, nursing homes and home care. Easy to replace individual bladders. LED and Audible alarm activate when pressure falls below 10 mmHg.. 8 – LPM (Liters per Minute) pump produces consistent air flow. Mattress has 18 air bladders. The zippered Poly/PU cover material is water resistant, vapor permeable and quilted. CPR valves provide fast deflation. Bed included.