Polyurethane or Silicone

even during aerosol treatments

Raised markings allow for easy graduations measurement

Waterproof backing is PVC coated

Med Aire Alternating Pressure Pump and Pad System with Fixed Pressure Sold By:1 Each Polyurethane or SiliconeDrive Medical Med Aire Fixed Pressure Pump and Pad System, 78" L x 36" W x 2 1 2" H, 5 min. Pump Cycle Time, Latex Free Pressure pump and pad system has 130 individual bubble cells for maximum comfort and effectiveness. Quiet pump technology alternately inflates and deflates the air cells. 4 LPM pump produces consistent air flow and pressure over a 5 min. cycle time. Variable pressure setting on deluxe pump allows comfort setting for maximum comfort