When seating on the cushion, both sides of coushion rise to push the hips inward. The pressure-relieving comfort of Cogit comfortable cushion can be shaped or fluffed to fit your needs. Absorbs and distributes your weight evenly over its contoured surface enabling you to sit comfortably for extended period s of time. Extra stability and support a good posture. How to use: Place your hips on the swelling side of the cushion and push into the hollow. Cautions: Avoid fire. Do not use in any other purposes. Do not jump on the cushion. If you do not like the smell of the fibers right after it is removed from the package, leave it in shade area for a while. The firmness of the cushion may change depending on temperature. Do not play with the plastic package. Not washable.