Types:AFeatures:-The seat cushion is low in front and high in the back to adapt to the body shape and conform to ergonomics. The hollow design is ventilated and breathable to keep you dry and comfortable.-Made of high-density and breathable memory foam, which slowly rebounds and keeps the prototype intact. -Non-slip design (with raised dots) on the bottom, making it difficult for the cushion to slip off the chair or sofa. -With the side hand strap, easy to carry, can improve sitting posture anytime, anywhere and relieve back, leg and hip pain caused by poor sitting for long periods of time.-Suitable for office chairs, office chairs, wheelchairs, etc. It is ideal for outdoor sports activities, car drivers and travelers. Specif.