U-shape Design: Orthopedic seat cushion with 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 is made of high density slow rebound memory foam. Softness and hardness are less affected by temperature, with no deformation or collapse, helping to prolong the service life of the tailbone relief cushion. Correct Your Sitting Posture: The contoured design conforms to body curves, promotes blood flow, provides ideal support for hips and back, and helps develop a correct sitting posture. Reduces pelvic pressure and relaxes legs. Wide Application: Compact design with dimensions 15.7x7.9x6.3 inches. Features anti-slip rubber on the bottom, suitable for office, home, plane, car, train, and wheelchair. Ideal 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, with a zip for easy removal and machine washing. Portable side handle for easy carrying. Color: as shown in the picture.