Features: -Benefits: reduce your pain and discomfort while sitting or infection with diseases like hemorrhoids, coccyx and bed sores. -Soft with suede finish, it is easy to clean, just wipe with a damp cloth. - The inner oval cup 18 x 15 cm, well shaped, a breathable area, supports the top of the leg evenly and provides relief in the middle. -Adjustable firmness, inflate or deflate to achieve desired effect. -For any chair, car seat, truck seat, wheelchair, airplane. -Foldable, lightweight, portable, you can take it anywhere. Specification: Color: gray Material: PVC Cushion size: 45.5*40*11cm/17.9*15.75*4.33in Middle hole size: 18*15cm/7.09*5.9in .