Gymnic Megaball: Group Activity Fitness Ball, Orange (150 cm) Incorporating balance-centric exercises into your workout enables your muscles to work harder to stabilize your body Multi-functional piece of equipment that can be used in a range of activities from group training and personal use to dance/art events and horse training Allows for a wide range of exercises to improve balance, coordination, flexibility and stabilization; Activate more muscles with each move and burn more calories Phthalate and BPA free; Made from durable, latex-free, vinyl Available in 2 sizes: 150 cm exercise and 150 cm exercise ball; Guinness World Record Ball Size