Batman's Utility Belt was fully recreated from cardboard and worn by producer Glen Murakami's design team, to test how the belt would function while in motion. It was designed to be as realistic as possible, even having Batman's gear visually fit into the belt, such as the Grappling Gun or batarangs.
The belt is one of the most important components of Batman's outfit as it contains his arsenal of weapons, gadgets, and equipment for protecting Gotham City.
Batman hade a Utility Belt for keeping his Batarangs, Grappling gun and Bat-grenades.