The ergonomic Halo Trainer is an evolutionary device that can be used with any 55 cm or 65 cm Stability Ball. Workouts using the Halo Trainer can start at a basic level then advance through a wide array of exercise variations with options to progress or regress the degree of difficulty to meet the specific needs of the individual. Its ergonomic handlebars improve already popular equipment such as the Stability Ball, BOSU* and TRX. The Halo Trainer offers dynamic and challenging ways to engage muscles while incorporating strength work, flexibility training, total body conditioning or physical & occupational treatments.