Material: The environmentally friendly material made of soft and durable PVC will not irritate the skin, is durable and elastic. Design: The yoga ball adopts durable explosion-proof and sturdy non-slip design, which will not slide during exercise. And with a plug and straw that can withstand high pressure, it can help you inflate quickly. Size: The purple yoga ball with a diameter of 25cm (9.84 inches) is easy to carry and store. Function: The yoga ball has the auxiliary function of body shaping, which can straighten the shoulders, straighten the back, tuck the abdomen, and lift the hips. Application: The yoga ball can be used for Pilates, yoga and gymnastics training for physical therapy and rehabilitation during pregnancy and childbirth. The fitness ball can be used for exercise of the abdomen and back in the office or at home.If you have any questions, please feel free to communicate with us. yoga ball exercise ball pilates ball ball pilates ballon exercice 8 ball bosu ball