Leitz Active Sitting Ball with Anti-Roll Function. A stylish and ergonomically designed exercise ball that serves as an ideal additional seating option and keeps the body moving throughout the day. It supports muscle movement to improve posture and flexibility, and helps alleviate back pain. Alternate between the ball and chair every 30 minutes and ensure proper inflation according to the instructions. Tested and recommended by the German Institute for Health and Ergonomics according to DIN 26800 EN ISO 15537. TÜV-certified anti-roll safety feature that prevents the ball from moving when standing up and allows for secure storage. Equipped with a sturdy and durable carrying handle that makes it easy to transport from room to room. Robust phthalate-free inner ball with a generous diameter of 65 cm, suitable for body heights between 156 and 180 cm and a maximum load of 150 kg. Quick and easy setup by inflating the inner ball with the included hand pump and inserting the stopper. The fabric cover is removable and hand washable. The package includes the inner ball, fabric cover, hand pump, two stoppers, a stopper remover, and the user manual. Plastic-free packaging. Material: PVC, phthalate-free. Size: Ø 65 cm. Weight: 2.8 kg. Color: light gray.