Multifunctional Air Inflatable Alternating Air Pressure Hospital Patient Bed Massage Mattress With The Pump Controller Preventing Decubitus 1,Alternating inflation and deflation circularly, compression and decompression of air waves help patients to change body position, increasing the blood circulation, anti bedsore and prevent decubitus ; 2,This product is suitable for the patients who are likely to spend more than15 hours per day in bed ; 3,It's also suitable for the patients who are classed as medium to high risk of developing pressure ulcers ; 4,The mattress can turn over the body or sit up on the 45 degree angle ; 5,The air inflation and deflation period is 10 minutes each time , the air inflation or deflation volume is increasing or decreasing 5% per 5 minutes ; 6,The maximum air pressure of the air pump is beyond or equal to12kpa , the maximum air pressure of the mattress is beyond or equal to 4kpa ; 7,The maximum load-bearing is not beyond 135 kg ; 8,The continued working time can last is beyond or equal to 24h , the working noise is below or equal to 45dB , the air pump power dissipation is below or equal to 20VA ; 9, The mattress is not suitable for the body weight is beyond 135kg , the patients with an unhealed scalpel mouth , the patients with spinal fracture ; 10,With one air pump box and controller at the side ; 11,The gift box size is 38x31.5x18cm , G.W. is 6kg . One carton can hold 5 pcs . The carton size is 88x39x38.5cm , G.W. is 32kg .