Description: 1. Long-term exercise can promote brain balance and soft limbs! 2. For sisters with large abdomen and thick arms! 3. It can increase blood circulation, enhance heart and lung function, and keep your spine upright, thus improving your back collision problem! It is a combination of leisure, exercise, weight loss and self-cultivation, safe and convenient to use! He fixed the yoga ball with a circle and practiced yoga. 5. It is safe and reliable with explosion-proof materials.