FitBall Seating Disc

Use it in a chair! Use it on the floor! This unique dome-shaped and air-filled disc mimics the movement and shape of an exercise ball. On the floor, it works for balance training, proprioception and strengthening of the lower extremities. A very versatil

Misc.:  Inflatable, dynamic cushion, Mimics both the movement & the shape of an exercise ball, Use it in a chair as an active seat cushion, Use it on the floor as a standard balance disc, 15 size. Iridescent blue color.
Company: Ball Dynamics 
List Price: $32.98
Amazon Price: $26.94