Gymnic Physio Exercise Ball, Red (85 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 for fitness, group activities, physio-therapy (physical therapy) and motor exercises 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 which supports a maximum weight of 270 lbs. Available in 3 sizes: 85 cm exercise ball (recommended for users 6' 8" and taller), 95 cm exercise ball and 120 cm exercise ball