The sizing of this jacket just does not line up with American men. The portion of the jacket where the arms meet the body are so tight, that you will not be able to wear anything underneath it (layers), and not feel discomfort. I am 5'11, 220lbs (yes alittle fluffy but not huge by any means.). I orederd a 2XL. My arms feel as if the blood circulation is being cut off wearing nothing more than a polo underneath it when I tried it on upon receving it, right in the armpit area. This jacket feels like it was designed for men of smaller chest and arm sizes. Even at 2XL it felt like this. The look, feel etc of this jacket is great, but fitting and design leaves MUCH to be desired.

Great product with a reputation for quality that goes with it. Purchased for training days and wanted something that stays above my ‘war belt’. I’m 5’9, 155., with an athletic build. Purchased the small because I wanted it snug around midsection. Unfortunately too tight under arms. Had to send back. Medium could be too loose on the lower part but I’ll give it a shot.

The pocket size and distribution are great. Lots of nice little details. This is the second jacket I ordered. The first one is about ten years-old and the only issue I've experienced was the cuff adjustment tabs are plastic and broke off with time and now need to replace those. I am generally a 2X size and even in 3X this jacket seems a bit small and does not leave too much room for layering.