The TheraBand Exercise Station combines strength, balance and flexibility exercises into one convenient system for fitness and therapy. It allows easy progression of exercises by increasing the challenge or resistance of the exercise. The system was designed to integrate the use of progressive elastic resistance for strength training with exercise balls, fitness steps and stability trainers. The center cavity fits all popular exercise ball sizes as well as TheraBand Stability Trainers, Rocker Boards and Wobble Boards (available separately).