Professional grade stability balls are exceptionally durable exercise balls designed for gym‎,‎ office and home use‎,‎ Each pro series ball is designed to hold 2000 lbs‎,‎ of static weight and is Anti‎-burst resistance up to 1000 lbs‎,‎ of static weight‎,‎  gym balls can improve your core strength‎,‎ balance and overall agility‎,‎ Each exercise ball is designed with dense walls for the ultimate support and durability for any use‎.‎