/cgl/ - Cosplay & EGL

Im looking to do a few jackets for my group cosplay.
We're going to do off duty Zaku pilots for an upcoming anime convention and we all agreed to do a custom version of the jacket below, but the issue is none of us really know what type of jacket it is (or what type it would be called) so we can order them. One of my friends said Parka, the other said it kinda looks like a Field jacket.

Any help or ideas on what type these jackets fall under would be appreciated. I *know* there is an offical name for this type of oversized jacket, I just need a point in the right direction