5'7", 170lbs, athletic frame except for the beer gut. Got the Medium. I like the material, vents, zipper pocket, and cut/fit in the chest, but this thing is too long to wear untucked. I think the length is great if you are a habitual shirt tucker and don't want it coming out, but I'm not, especially when it's hot as hell on a South Texas summer day. If this shirt bottom was maybe 3" shorter and had a slightly more horizontal back on the tail it would be perfect. For what it's worth, I ordered similar shirts from Poncho to compare as a company shirt, and found the fit about the same, but Poncho was maybe an inch shorter on the bottom. What I did like about the Duck Camp zipper pocket is that the stitching for the zipper stops at/below the top of the pocket. The Poncho one goes a little ways above it, which makes one side of the shirt thicker and stiffer than the other, so the collar kind of sits uneven. I also like real pockets on the DC shirt, not the magnets on Poncho. Overall, I'm going to keep the shirt because I do like the features, fit and materials, but I will have to get it tailored on the bottom to make it perfect.