1, Help evenly distribute weight and provide lasting comfort. Used for back pain, coccyx, orthopedics, sciatica, coccyx and hemorrhoids, improve posture. 2, Made of high-density rebound memory foam-high-density memory foam has sufficient strength to provide you with sufficient support when you are sitting and never flatten. 3, Non-slip floor and machine washable-small rubber dots on the bottom side of the tailbone seat cushion prevent it from slipping off the chair. The soft velvet concealed cushion is comfortable, removable and machine washable. 4, Multifunctional-sciatica cushion cover is very suitable for people suffering from chronic coccyx, orthopedics, sciatica, coccyx and hemorrhoids pain. Very suitable for any office chair, car seat, wheelchair, computer chair, kitchen chair, armchair, stadium seat, truck seat and airplane. 5, Designed for sedentary people, breathable decompression memory foam to release hip pressure. Designed according to the human hip structure and ergonomic principles when sitting, it effectively reduces the pressure of the seat on the femur and tail vertebrae, making up for the general office chair. 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. Sold by-Minnanxin