Its creation credited to writer Gardner Fox in Detective Comics #29 in 1939, Batman’s utility belt was first shown containing choking gas capsules that Batman often uses to hide his disappearances. Two issues after that were the debut of the Batarang, which he pulled from a hidden pouch in the back of the belt.
Over time, Batman’s utility belt became the most important tool in his war on crime. Either in capsules or pouches depending on the era, Bruce would fill the compartment with items to meet the specific needs of that evening. There are also items that he carries at all times like Batarangs, various gas and impact pellets, and his Bat-rope, now often propelled from a grappling gun.
The belt is more than just a place for the Dark Knight to store his various gadgets, tools, and “wonderful toys”. It is a tool in its own right, having been given specific functions and upgrades to get Bats out of certain situations with just a touch of a button. It also has been given upgrades in materials and security over the years, making it nearly impossible for anyone to access its contents but the Caped Crusader and his most trusted allies.
With the possible exception of his cape and cowl, there is no more important, useful, and classically “Batman-specific” part of the costume than the utility belt.
10. Bat Family Variations
Several members of the Bat Family each have their own variation of Batman’s utility belt, which they keep stocked with items that they find useful to their individual crime-fighting endeavours. Originally, Robin’s belt appeared to be smooth leather from the outside, but he had a variety of pouches on the interior of the belt that held his equipment, including his own R-shaped throwing weapons and Bird-A-Rangs. Modern Boy Wonders wear belts with outside pouches similar to the Caped Crusader's own belt.
In a very early appearance, Barbara Gordon carried her equipment in a hip-attached purse before she adopted the more practical utility belt. Through most of her costumes, with the exception of her Burnside outfit, she has opted for the belt with the cylinders on it. The Burnside Batgirl costume was replete with pouches, while the pouches on the armored Batsuit of Jace Fox's Batman are huge and modular, like most of his costume.
Looking at Nightwing’s sleek and tight outfit would lead people to believe that he doesn’t have a utility belt. And they would be right and also very wrong. It may not be a belt, but Dick Grayson is far from without his tools and weapons. It is within his gauntlets that most of Dick’s weapons are held. This includes his Wing-Dings - his own version of the Batarang - gas capsules, and other tools. His Escrima sticks were held in a strap on his back.