First timer looking to dip my toes into vintage flight jackets

So I've been interested in the flight jackets for some time now but never really looked into it much. Recently I picked up a Cooper "flight style" jacket for cheap and have started doing more research on the real issued and civilian reproduction models. I am curious if anyone knows how this jacket compares fit wise to a g1 or a2 also made by Cooper.

I purchased a size 46 which is a little roomy but I do plan to use it with layers in colder weather. My only complaint is the sleeves are a...

First timer looking to dip my toes into vintage flight jackets