Well, I'm 5'11", 172lb and have a 32" waist. I made the mistake of buy a medium without doing a more thorough reading of the reviews about how these shirts tend to shrink quite a bit. It fit proportionally well and form-fitting(I find a lot of slim shirts tend to be a bit too short around the waist) but overall, it was just too small and any shrinkage would have turned it into a shirt fit for a middle-school kid. The material felt fine for a t-shirt; thin but no different than any you'd find off the rack at a store. I went ahead and ordered a larger shirt and will be returning this one.