Unique and innovative design. This is a water punch bag like non other. The Head hunter wrecking ball style is designed to offer a great workout and feel like no other punch bag. A heavy punch bag that is filled with its secret ingredient H20 to offer a realistic feel when punching it to an opponent. The materials used to create the aqua products were developed by one of the oldest and well respected marine manufacturing company in the USA. These heavy aqua bags are incredibly durable and suitable in a professional or commercial gym and club environment.