Includes Pump * Iindividual bladders alternate every 10 minutes to provide a comfortable pressure relieving seating surface * Zippered non-skid stretch-knit cover is anti-microbial and meets California Tech Bulletin #117 for fire retardancy * Dimensions: 18 x 16 x 3 1/4 * Weight: 4 Lbs. * 1 year limited (pumps and mattress) and 6 months limited warranties * Portable alternating AC/DC pump allows the patient to be totally mobile * Rechargeable battery backup keeps system working for more than 7 hours per charge * Car adapter included * HCPC Code: E0190