1. High-quality memory foam cushion - This cushion is made of high-density, high-quality memory foam, which is both soft and durable. The high density provides excellent elasticity, ensuring that the support and elasticity remain intact even after multiple uses. 2. Coccyx pain relief cushion - The ergonomic "U"-shaped cutout relieves pressure on the sciatic nerve and reduces back, leg, hip and coccyx/tailbone pain caused by long periods of uncomfortable sitting. Whether you use it as a car seat cushion or an office chair cushion, you will notice the difference. 3. Skin-friendly fabric + non-slip bottom design - The bottom of our office chair cushion uses spray glue technology and has undergone multiple anti-slip tests to ensure that it stays firmly in place and is not easy to slip off. The fabric is soft and smooth, not easy to wrinkle, making daily maintenance easier. 4. Ergonomic design, improve posture - Our chair cushion is ergonomically designed to support your lumbar area, relieve back pressure, provide optimal support and comfort, while reducing coccyx/tailbone pressure and promoting healthy posture. 5. Suitable for various scenarios - Our office chair cushion is suitable for most seats, such as office chairs, car seats, home chairs, airplane seats or wheelchairs. It can relieve coccyx pain caused by long hours of work or driving, and become an excellent companion for your daily life, office and travel. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.