Burst Resistant Ball

《Product Introduce 》：

*Select the Anti-Burst ball PRO when you need firm support and for the

  safety consideration.They are designed for dynamic workouts that incorporate

  moderate levels of resistance.Deflate slowly if punctured. There are different

  resistance levels and sizes to meet different requirement.

*There are different burst resistance levels to meet different requirement. The ball

  is tested under static load and punctured with 4mm wide blade.