Didn't realize it was a Japanese mens medium until it arrived. Doesn't fit me, I should've read the description better beforehand.
I used the pay in 4 setup so didn't want to deal with the return. It's a really nice jacket and honestly would love to keep it if it fit me at all.
Here's the original description includes a bit of sizing info. Please refer to the photo. 1cm = 0.4 inch.