This is a fantastic coat; however, it runs a bit tight. I'm 235 Ibs, 6'1" with a 50"+/- chest. I ordered a XXL and it fits just right (wearing just a t-shirt or light shirt underneath). It would appear to me that the sizes run a bit small; ergo, I would order one a size larger than normal if you intend to wear anything else under it. I've received numerous compliments for it. Great for hanging out in the shadows! ;)