Pressure Relieving Wheel Chair Cushion can prevent pressure sores by moving or lifting while in the wheelchair. The Wheel Chair Cushion helps in automatically changing the pressure contact points and gives true pressure relief. The Wheel Chair Cushion gives complete control over the amount of time to perform pressure relief to either section of the cushion. The Pressure Relieving Wheel Chair Cushion is available in the sizes of 16" X 16", 18" X 18" and 16" X 18" with bed air cushion of 36" X 75".