COX SWAIN Gymnastic Ball Professional Ideal training equipment for the development of muscles. Suitable for beginners and advanced. Trained be back, abdomen, legs, buttocks and pelvic floor muscles. Promotes balance and coordination skills are used Can be used as sitting ball. Secure training thanks to anti-burst (Ball does not burst). Included is an air pump. Very good quality - low weight. + Exercise ball reduces back pain and strengthens the muscles + Secure Training thanks to anti-burst (Ball does not burst) + Can be used as a perfect seat Ball | + Stable material thus very good for functional training such as Yoga, pilates, etc. suitable + Will be trained muscles, while the balance of delivery: incl ball pump .