Sissel�Exercise Ball�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 Sissel Exercise Ball as a seat at home, the office, or school noticeably relieves pressure on the spine and strengthens back musculature. The surface of the Exercise Ball has a pleasant, friendly-to-the-touch structure, and is extremely resistant to abrasion. Sissel Exercise Balls also meet the highest safety standards.