The TOGU ABS Powerball Small 18 inch is an inflatable fitness ball with Anti-Burst System for added safety. This versatile large ball can be used as a seat ball or core stability training tool. The TOGU ABS Powerball Small 18 inch is useful as a seat ball and at the same time as an ideal whole body training device. Uses can effectively strengthen their abdominal, trunk, and back muscles by sitting upright and moving. While the sitting on the ball, the user automatically sits upright while engaging the pelvic, abdominal, and back muscles to keep their balance. In addition, the ball is suitable for various proprioceptive and sensorimotor training and physiotherapy. The TOGU ABS Powerball Small 18 inch is made of special ABS (Anti-Burst System) material that is latex free, odorless, and very load-bearing up to 1,100 lb. The safety system functions similarly to an airbag system in the car: in the event of damage to the ball by something sharp, the safety material prevents the ball skin from tearing open. The air passes slowly through the hole. The ABS provides an added level of puncture resistant safety. The ABS weight limit is substantially less than the ball’s weight capacity. Please observe pumping instructions and instructions. The ball also features a “double groove” design that provides traction and helps prevent the ball from rolling away. TOGU ABS Powerball Small 18 inch Specifications: Total weight capacity: 1,100 lbs. ABS capacity: 200 lbs. Measures: 18 inch (45 cm) diameter. Fits: Users up to 5 feet (155 cm) tall. Weight: 2.43 lbs. Color: Yellow. Materials: Patented Ruton® PVC, latex, plasticizers, and phthalates free. Includes: ABS Powerball, training manual is enclosed with the product packaging. Made in: Germany.