High quality materials - this round cushion is made of high quality PVC fabric, comfortable and breathable, non-toxic and odorless, soft, good elasticity, ergonomic and durable decompression device, conforms to the natural curve of the hip, easy for Support, stable posture.Easy Inflate - This round seat cushion supports oral inflation or inflation pump inflation, you can freely adjust the internal air density of the product. Other mats are difficult to inflate and will cause you to feel a lack of air. By using our included air pump, you can inflate your mattress quickly and easily.Comfortable Seat Cushions - My round seat cushion helps provide comfort and prevent pressure sores. It is also ergonomically designed to evenly distribute your weight and provide painful painful areas. Suitable for people who sit for long periods of time, such as drivers, office workers, students and wheelchairs.Easy to clean - This soft round anti-decubitus cushion fabric is machine washable and easy to clean . The kit includes 3 seat cushions and 3 air pumps, easy to use.