The punching bag reinvented! Imagine 24 gallons of water in a punching bag?!? The most innovative, driven technologies were put into the HydroBlast Boxing punching bag. The bag takes the blow, not your wrists or shoulders. The safest way to box. Period! The shape seems a little weird when you walk up to it, but the ability to throw an actual uppercut and hooks makes this invention extremely genius! A great workout that is beyond safe – enjoy!