Pump features a clip-on hanger, adjustable comfort range, visible normal and low pressure indicators and a static function to suspend the alternating mode. Cycle time is 8 minutes with pressure range from 30mm HG to 80mm Hg. Mattress has 20 interchangeable, individual, 8" nylon/polyurethane air bladders for easy cleaning and maintenance. System features an emergency CPR valve and quick connector for easy operation. Vapor permeable, water resistant cover zips off for cleaning. Slip-resistant mat and securing straps on the mattress base provide added safety. Weight capacity: 350 lbs.