Balance Gym Ball 55cm to 85cm Exercise, Pregnancy & Yoga Anti Burst with Pump

Build your core strength and balance with the Core Balance Anti-Burst Gym Ball. Because the inflatable ball is unstable to sit, lie or lean on, it constantly engages your core as your stabiliser muscles go into overdrive to help you maintain your balance.Durable Anti-Burst DesignThe inflatable gym ball is made from anti-burst PVC material for superior durability under pressure. Should it get punctured, it will slowly deflate rather than popping ...