Air flotation cushion, made of high quality, soft and resistant medical PVC rubber. It is designed to distribute the weight of the user evenly and adapt to the posture of the body, cushioning the pressure of the sacrum, caudal vertebra and sitting bones and thus reducing the risk of ulceration. Features: Air cells connected so that air flows between them optimizing the pressure relief effect, easy to inflate and adjust. The two-valve design improves the posture of users with asymmetric pelvises with postural difficulties. Breathable and non-slip cover. Includes two covers.