【Memory Foam】Made of pure memory foam that adapts to your curves, provides superior comfort and helps with muscle fatigue. The premium memory foam never loses its shape and slowly rebounds to original shape after use. 【Friendly Design】Anti-slip rubber bottom prevents need for frequent readjustment. Removable cover makes cleaning easy. Additional mid-cover fabric to protect core foam. Breathable mesh cover allows air to circulate and prevents heat from collecting in the cushion. 【Ergonomic Design】 The ergonomically designed “U” shaped cushion helps to increase blood flow and support good gesture. Helps with muscle fatigue, leg tightness, and hamstring soreness. Popular with people who sit for more than 8 hours a day. 【Pain Relief Cushion】Place on any chair to provide extra support to your body to offload pressure on your spine, back, and sciatic nerve. Effectively relieve back, coccyx, sciatica, tailbone pain. 【Work with Any Chair】This ergonomic seat cushion provides comfort for people who sit in chairs and face screens all day. Great for office work, play games, watch movies, etc. If you travel by car, train or plane, but feel uncomfortable with the seat, this portable cushion will be your best travel partner. Bring extra comfort to your office, car, or chair!