【Recommended for Office Workers and Those Who Work at a Desk for Long Hours】Desk work and sitting in an office chair for extended periods can put a strain on the lower back and tailbone, leading to poor posture. This cushion uses high-quality, slow-rebound urethane material to distribute pressure on the buttocks and lower back, preventing pain in the buttocks and tailbone even after sitting for long periods. It gently envelops the shape of your buttocks, providing excellent comfort. 【Ergonomic Donut-Shaped Slow-Rebound Cushion】 Ergonomically designed with a hole in the center, this donut cushion fits the buttocks and thighs perfectly, allowing for comfortable sitting for extended periods. The front convex part prevents you from sliding off the chair when leaning forward, while the slightly lower rear concave part gently protects the tailbone. The curves on both sides fit the buttocks beautifully and gently support the pelvis. The oval hole in the middle provides good ventilation, and the hollow design maintains airflow, achieving excellent breathability, so you won't feel stuffy even after sitting for a long time. Recommended for pregnant women, postpartum women, and those with hemorrhoids; it can also be used as a beauty cushion. 【Resistant to Deformation & Cooling Material Cover】 Made with slow-rebound, high-density memory foam, it firmly supports the body and is a material that is resistant to deformation even after sitting for long periods. The cover uses breathable, cooling nylon knit material, so women wearing skirts or short pants don't have to worry about fabric marks on their skin. The back of the cover has non-slip fabric for a secure and stable feel. This chair cushion can support correct posture. *Please note: Do not use on light-colored synthetic leather or genuine leather. 【Special Service - Includes 2 Covers】 The cover has a zipper and is removable and washable. Two spare covers are provided for easy replacement of patterns and colors. It's great to have a spare cover so you can still use the cushion while one cover is being washed! 【Supporting Those Who Work Hard - For Better Health】 Size: (approx.) Length 40 * Width 43 * Thickness 6-8cm Material: Inner material: Memory foam Cover: 45% nylon, 42% polyester, 13% polyurethane, Back: PVC material (with non-slip particles) #RoundCushion #DonutCushion