This blue Gym Body Ball is 650mm (25.5\") in diameter and made from very strong but lightweight PVC, with a maximum user weight of 300kgs (47 st) ensuring it should never burst during normal use.Gym Body Balls are lighter and more pliable than Gym Balls and have a warm tactile surface for a better user experience. Gym Body Balls are a versatile exercise aid that can be used with a wide range of individuals and in a wide range of situations including, in a nursery, as part of a Yoga routine, during relaxation therapy or whilst nursing. Gym Body Balls are also a practical accessory during play or exercises designed to improve physical strength, flexibility, dexterity or balance. Gym Body Balls are available in a range of different diameters all of which can be found in this area of our shop. Please note the Gym Body Ball is supplied deflated and will require inflation before use, a manual inflator pump can also be found in this area of our shop if required.