BENEFITS: Diameter 35cm Large Orthopedic Seat Cushion With Air Pump.Reduce your pain and discomfort when sitting or infections with diseases such as hemorrhoids, tailbone and wounds in bed. Foldable, lightweight, portable and soft with suede surface. The donut design helps you relieve pressure and feel comfortable. Soft Durable material that conforms to your body to give you a premium seating experience, resilient and not easy to tear. Holds up to 100kg of weight. Quick and easy inflation by mouth or with the included air pump. Adjustable firmness, inflate or deflate to achieve desired effect. The synthetic flannel cover is hypoallergenic and machine washable, ensuring a clean and safe pillow. Applicable parts: To prevent bedsores, suitable for those who suffer from hemorrhoid, sciatic nerve, pregnancy coccyx, you can use this,Complete set a gray donut pillow comes with a pump for easy inflation and a travel bag.