1. Tailbone pain relief pad: used for hemorrhoids, cracks, joint pain, coccygeal pain, sciatica, disc herniation, coccygeal fracture, anal fissures, vaginal surgery, postpartum or lower back pain, etc 2. Scientific design: Center hole, contour edge, effectively lift you from the seat surface. The pillow gradually tilts from the back to the front so that your thighs can naturally lift off the seat. There are "U" shaped cuts in the front and back of the tailbone cushion to increase your comfort. 3. Enhanced support and comfort: Durable and supportive to support better posture and help avoid friction in delicate areas. 4. Two sizes of chair pillows are available: standard size 15.5*17.5*5 inches, large size 17.5*18.5*5 inches. 5. Carry handles and hooks: as a chair cushion, it can be used in offices, families, outdoor, travel or wheelchairs and other places, requiring handles and hooks to be carried easily. You can take the handle of the donut pillow and hang the donut pillow over your backpack, suitcase, or wheelchair