Relaxus Balance Trainer - Whole Body Workout. With Straps, Pump & DVD. 60 cm / 24" Round Great for balance, core strength & toning legs Flip upside down for increase instability and greater work out Suitable for all skill levels With Straps, pump, & instructional DVD Supports squats, bicep curls, shoulder raises, crunches. Strengthens, trims, and tones while improving balance and coordination