Great for post-op / post-injury rehab, the OPTP Rotational Platform provides a smooth gliding, non-skid surface for upper and lower, closed-chain, extremity rotational exercises. For use in either seated or standing positions, the OPTP Rotational Platform is ideal for hip range-of-motion exercises, tibial rotation and foot/ankle exercises. Incorporate resistance bands for added resistance, or the OPTP Slant for additional positioning. Includes Anchor platform (approx 9" x 12"), Rotation platform (approx 9" x 15") and a resistance cord.