Exercises Printed On Exercise Ball For easy reference, exercises are printed right on the gym ball, making it a great equipment for both beginners and those more advanced. These gym balls are the ideal replacement for your old weight lifting bench and can be used with various free weights and dumbbells to improve stability and range of motion Anti-Burst Our gym balls is made of high-quality PVC material and Anti-burst honey comb structure. Anti-burst system mean PROIRON exercise ball only slowly deflate instead of bursting when exercise ball is pierced by sharp objects Anti-slip surface The fitness ball has a non-slip surface, which is essential for a safe workout. Eco-friendly material for gym ball won't irritate your skin. Each PROIRON gym ball comes with an easy-to-use hand pump. When the swiss ball is not in use, you can release the gas, fold the ball and store it Extra thick exercise ballOur exercise ball have thicker wall in 2mm than normal yoga ball (withstand up to 300kg), made with top quality material, free of BPA & heavy metals Improve Core Strength, Balance & Fitness Swiss ball are perfect for yoga or pilates workouts, sit ups and other abdominal exercises, stretching or as an office ball chair to improve your Core Strength. Fitness ball is a versatile piece of exercise equipment for both home, the gym and even the office!