I mostly see them worn in the Furry, Jumpstyle, and hardcore groups. They're usually HUGE pants with wider bottoms than tops, lots of pockets, rivets, and belts. They're usually costomized to some degree, although ususally they're just black with the occasional bright colored belt. I've tried to find a name for these kind of pants, but I can't seem to find the right one. They arent just "cargos."

Also, the pants pictured above is one that can change shape to be either pants or overalls. I've seen similar pairs that can also change into shorts, legwarmers, and any combo of the above. However, I'm not really looking for those specifically, just that kind of style. This was just the first image i could find, because, well, I don't really know their name.

Thank you for any help!