The VIP-515-TP-18 is a revolutionary tilt chair that weighs just 38 pounds in Manual Propel mode (MS). This type of a chair redistributes pressure to the lower back to help prevent pressure sores and skin breakdown. A tilt range of 0-35º is crucial in our weight-shifting center-of-gravity pressure relief design. The VIP-515-TP-18's frame is made of an ultra lightweight T-6 aircraft grade aluminum.