Med Aire Alternating Pressure Pump and Pad SystemThe Med Aire Alternating Pressure Pump and Pad System is a therapeutic medical device used to prevent and treat pressure ulcers. It consists of a quiet pump that inflates and deflates individual air cells in a durable pad, promoting constant pressure relief and blood flow. Features Helps prevent pressure ulcers (bed sores) Improves blood circulation Reduces pain and discomfort Can help patients sleep better Specifications Dimensions 36" W x 78" L x 2.