OHO Quadtro Select Air Cushion - Low Profile (18" x 16") 0046roduct DescriptionInterconnected air cells provide an adjustable, low deformation, counter-pressure environment that assist in the healing of ischemic ulcersProvides unparalleled performance in facilitating blood flow by fitting, matching and tracking the shape of the personLightweight: Easy to handle and carry, at just 3.8 lbs/1.7 kg. Varies by size.Ventilated: Separated air cells allow air circulation to reach the surface of the skin and provide a cooling environment.Washable: Cushion can be easily cleaned with soap and water. Cover is machine washable.Repairable: Neoprene rubber cushion can be patched to extend use.