This 13" inflatable deluxe disc is used for core stability exercises which promote correct posture, release muscle tension, and strengthen the torso. It is suitable for all ages. Use it while you sit, stand, or lay. As inflation increases, it becomes more unstable and more challenging to use.
It functions similarly to a PTball™ when used for sitting. However, it is more safe than the PTball™ for elderly patients since it can be placed in a chair.
One side has a smooth surface and the other has friction bumps.