U-shape Design: Orthopedic seat cushion ergonomically designed to provide support at main pressure points, wrap the buttocks and relieve tailbone pressure. Helps reduce pain from sciatica, tailbone, back, hip, disc herniation, hemorrhoids, piriformis, lumbosacral arthritis, and surgical recovery. Constant Temperature Memory Foam: Seat cushion made of high density slow rebound memory foam. Softness and hardness less affected by temperature, no deformation or collapse, prolonging the service life of the tailbone relief cushion. Correct Your Sitting Posture: Contoured design conforms to body curves, promotes blood flow, provides ideal support for hips and back, helping develop correct sitting posture. Reduces pelvic pressure and relaxes legs. Wide Application: Compact design, 15.7x7.9x6.3 inches. With anti-slip rubber on the bottom, suitable for office, home, plane, car, train and wheelchair. Fit for teachers, drivers, students, disabled people, pregnant women, office workers, etc. Helps reduce discomfort in coccyx, back and hips. Considerate Detail Design: Elegant velvet cover is soft and comfortable. Cover with zip is removable and machine washable. Portable side handle for easy carrying. Color as shown.