This page contains all of the Gear (Hats, Shirts, Pants, Boots) upgrade locations in BioShock Infinite. Gear upgrades are passive abilities that operate similarly to Tonics in the original BioShock. Players can equip four Gear upgrades at any time in four categories: Hat, Shirt, Pants and Boots.
One facet of Gear collection that should be noted is that, for the most part, gear collection is randomized. A few select pieces can be expected to appear in the same location every time you play Bioshock Infinite, but for the most part what you find when you check out a box will be different. This is randomized when they appear on the map. If you dislike what you find, you could restart from your last checkpoint and find it again, and fully expect it to be different. Note however that the checkpoints in Infinite are quite far apart.
This can be interesting as most will make their own conclusions on which pieces of Gear are best to use, and this function can either force you to try out new gear when its all you have, or give you a chance of running into a favorite early on.