High quality materialThe donut pillow is made of elastic memory foam. and will not flatten or deflate with prolonged use like inflatable pillows. It has the advantage of being very elastic, supportive, soft and comfortable. Giving you comfort and value, distributes your body weight across the seat, reducing pressure on your lower back and tailbone, and promoting proper posture and spinal alignment. memory foam pads are ergonomically designed to provide maximum support and comfort, relieve back pain and promote the natural curvature of the spine. The seat cushion improves blood circulation and sitting posture, relieves tailbone pain and relieves sciatic nerve.Easy to InflateQuick and easy inflation by mouth or with the included air pump. Our included air pump is always a quick and easy way to inflate your pillow. When deflated, it folds easily to save space. carry. Foldable, lightweight, portable and soft with a suede finish, it's easy to clean, just wipe it with a damp cloth. ulcers, bedsores, etc. It also helps prevent spinal problems and provides a healthier sitting posture. It is an ideal item recommended by orthopedic surgeons, chiropractors and medical professionals. It is ideal for cases of hemorrhoidal complications or when recovering from surgery.VersatileDespite the dense foam, the memory foam pillow is still light enough to carry around. For use in wheelchairs, home, office chair, armchairs, restaurants, stadiums... Ergonomic relief cushion design promotes natural curvature of the spine, good posture, tailbone relief, and proper hip alignment all day long - wherever you are. Note: Data is all personal data Manual measurements, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.