This is the perfect companion for yoga exercise and Pilate routines, and is also great for many pregnancy exercises. Yoga ball will help you build strength, tone your muscles, greatly increase your flexibility, and also improve your balance. Extra durable PVC material is rated to 300 kg anti burst for your total safety. If the ball is accidentally punctured while in use it will deflate slowly. Features:- Lose weight Tone muscles Strengthen your back and reduce back pain. Improve your stability and balance