【Anti-Bursting】 - Our exercise ball is made of anti-bursting honeycomb structure, thicker and heavier than others. The anti-burst means that PROIRON exercise ball will slowly deflate when pierced, rather than bursting. 【Non-Slip Surface】 - The fitness ball has a non-slip surface, which is essential for a safe workout. The fitness ball is made of eco-friendly material, won't irritate your skin. 【Extra Thick】 - Our exercise ball have 2mm wall, thicker than normal yoga ball, load capacity is up to 300kg 【A Chair Or Birthing Ball】 - If you sit at a desk all day, you can use a gym ball as a chair to improve your core strength and balance while sitting. Plus, you can use a gym ball as a birthing ball for prenatal exercises, and to reduce discomfort during pregnancy and labour. 【Pick The Right Ball】 - This is light blue yoga ball, the ball size is 55-65cm (for Height 162cm-178cm) approximately. The Best Way to Build Core Strength with PROIRON Exercise Yoga Ball. PROIRON yoga ball is perfect for providing support in helping you improve balance and flexibility, and it also adds a balance challenge to some poses. The stability ball is a great way to get extra support for moves that require endurance and flexibility. Why You Should Work Your Core? A strong, fit core doesn't just help you look good, it also Helps daily activities become easier. Improves your performance in sports and exercise. Suitable for everyday exercise, yoga, Desk chair, Abdominal training