Eco-friendly MaterialTPU environmental protection material + grade lycra diving elastic cloth, reject 99% of bacteria growth, delicate touch, high elasticity, no deformation, can be washed repeatedly.Easy to Use: It is easy to use with air pump. And it is easy to fold. Convenient to carry.(Advanced Design, Body Pressure Distribution, Easy to Sit for a Long Time) The 5D airbag cushion features a breadblock design consisting of 64 bread like air columns. Each air column has air convection. The air column pressure automatically adjusts after gravity, providing an even compressed "anti-gravity" effect and decompression sensation. More than 30% less strain on the lower back, so you can sit for a long period of time. You can still use both sides.(Breathable, Durable, and Won't get stuffy) The 5D airbag cushion construction provides excellent breathability and prevents stuffiness even when sitting for long periods of time. Unlike regular cushions, this chair cushion is more elastic than a normal cushion, pressure dispersed, breathable, soft and fluffy airbag. It supports your body weight and reduces the burden on your back, and allows you to sit for a long period of time. Great for a variety of occasions such as back pain prevention, sciatica, work for long drives, desk work, and fishing.