RELIEVE PRESSURE - Pressure sore cushion for pressure relief with ergonomic shape design can distribute the gravity uniformly and will help to relieve pressure from your bottom or back. Ideal for hospitalized people, bedridden people, drivers or people who have been sitting for a long time.EASY TO USE - Wheelchair air cushion comes with a air pump which can be inflated fast. You can easily adjust the air level and firmness for your specific body type by adding or removing air. Deflation is as easy as Inflation. Just pinch the mouth of the valve and squeeze the cushion to let air out quickly.POROUS DESIGN -Inflatable seat cushion adopts high temperature thermal compression and multiple vent design to disperse the seat body pressure and accelerate air dredging. A ventilated environment is formed between the user and the product contact surface, thereby reducing the occurrence of bed sores.COMFORTABLE PVC MATERIAL - Bed Sore Air Cushion is made of high quality PVC with good waterproof performance and durability. It is breathable and comfortable in summer, not easy to sweat, and hard to harden in winter.