Below was my original message, and I'm on the fence between the two sizes. I think I would fit perfectly in between, but have to choose with the more fitted look and the looser one. With the fitted jacket, best I can do is get a couple of layers underneath with a non-chunky sweater. The arm holes are quite high and the sleeves are slim. If I go one size up one, I can actually get a suit jacket underneath with slight room to spare, meaning bigger all over. I don't intend to wear over a suit often, if at all. It's as if one size up is equivalent to two for whatever reason. Both are comfortable in their own way. So should it be "1" or "2"? 1 2 I've been on a mission to find a versatile field-type jacket, something to wear both casually, and if necessary in a business casual context when I don't feel like wearing a sportcoat (appropriate with office pants and dress shirt). I've always been interested in Belstaff jackets, but have been on the fence on whether it is worth the cost. The one I'm interested in pulling the trigger on is a black, wax cotton Roadmaster. I'm wondering based on color and styling, whether this would be versatile enough for both dressier and casual occasions. I would prefer the jacket in a navy, but Belstaff being hard to come by in the U.S., I'm limited in color choices. I'm wondering if overall, this is more of a motorcycle only or back country-type wear. Running about $600, so a bit pricey for something that is relegated to an occasional wear-only jacket. I'd want to be able to wear the hell out of it.