Fitness ball is a novel, interesting and special sport. Fitness ball has many uses and advantages: it is suitable for all people to exercise (including those who need rehabilitation treatment), with good fitness effect (especially for spine and pelvis) and good injury recovery and rehabilitation function. The fitness ball is relatively safe during exercise and is not easy to be damaged. Fitness balls can improve people's flexibility, strength, balance, posture and cardiopulmonary function. This rubber fitness ball can withstand up to 400 kilograms of pressure. But this lovely thing is quite naughty. If you don't master the essentials, you will be fooled by it. Fitness ball is a novel, interesting and special sport. Nowadays, fitness ball is especially favored by urban women because of its interesting, soothing, safe and obvious effect. Fitness balls can exercise the muscles of the chest, abdomen, back, buttocks and legs, which play an important role in maintaining body balance, improving body posture and preventing sports injuries.