Drive Medical, Variable Pressure Pump and Mattress Pad System Med-Aire Pressure Redistribution 34 X 78 X 2-1/2 Inc, Count of 1Product Description Pad with end flaps for securing under mattress 130 individual bubble cells for maximum comfort and effectiveness Quiet pump technology alternately inflates and deflates the air cells 4 LPM (Litres per Minute) pump produces consistent air flow and pressure 5 minute cycle time Variable Pressure setting on Deluxe Pump allows comfort setting for maximum results Built in bracket for mounting to bed Product Benefits Ingredients