DescriptionThe Bosu™ vestibular dome with 1/2hr video and 4-page manual:This Versatile balance trainer which can be used as a ball or board. You can inflate the ball to change instability; 25″ diameter.Product FeaturesBalance Ball Trainer For Strengthening And Coordinating Core MusclesSupports Squats, Bicep Curls, Shoulder Raises, Crunches, And MoreStrengthens, Trims, And Tones While Improving Balance And CoordinationIncludes Workout Dvd, Foot Pump, And Exercise ManualCombines Physical And Mental Focus; Measures 55 cm in Diameter
