Got one of these probably 4 or 5 years ago for working in the mountains and for the cold season. Still rocking it to this day and I've put that coat through a lot.

The fit is fabulous. I am 5'5" and 122 pounds. I ordered a small in the short length. I am able to put a thick sweatshirt, and pants (with long johns) under these. These are warm and comfortable. There is plenty of room in the straps to adjust the length if needed.