PREMIUM MEMORY FOAMOur seat cushion is made of pure memory foam, soft and firm.Premium high density foam and gel layer for great support.Transforms any hard chair into a super soft and comfortable seat. SOFT GEL CUSHIONThe gel design cools the seat immediately and prevents heat build-up after sitting for a long time.Ideal for people with heat intolerance or high temperatures and popular with everyone in summer.The gel core also increases the density of the pillow for more support. RELIEF FROM BACK PAIN & SCIATICAErgonomic U-shaped design perfectly fits the curve of the hip and improves blood circulation.Effectively relieves back pain, lower back pain, sciatica and other problems caused by sitting for a long time. SPECIAL DESIGNSErgonomic U shaped hollow design for superior comfort.Non-slip rubber base keeps the butt cushion in place even when it moves on the seat.Portable handle makes it easy to carry.The washable, breathable zippered cover is easy to clean, simply remove the cover and throw it in the washing machine. USELarge size (45x35x7cm) fits all types of chairs,great for office chair,gaming chair,dining chair,wheelchair.Handle on the side makes it easy to carry for transportation and outdoor use for car seat, airplane, train, sports game grandstand, traveling, driving.Convenient for business trips, sporting events, or the elderly.