The Sissel Sit Air combines the desired upright posture of a sitting wedge with the dynamics of an unstable inflatable cushion. It is a dynamic, multifunctional seat wedge for use in rehabilitation, at home, at work or wherever anatomically correct and comfortable sitting is required. With the Sissel Sit Air, the user not only sits upright, but also trains their back and core muscles almost unconsciously. The wedge cushion is available in two different colors. The accompanying mesh cover allows air to circulate.