SISSEL® Exercise Balls can be used for a variety of purposes: to assist you in your workout, as a useful tool in physiotherapy, as a seat to encourage correct posture. The use of the exercise Ball as a seat at home, the office, or school noticeably relieves pressure on the spine and strengthens back musculature. Exercise balls are also proven assistive devices in physiotherapy, birthing exercises and during workouts. All Exercise Balls come with a workout poster of ball exercises.