
I bought a large one which initially fit as expected. I'm 5'10", weigh 186 pounds and am fairly 'built' or have a larger athletic build. In general, large shirts are ideal, but some, like this one, have shrunk so much after washing and drying that the shirt shows my stomach slightly when I put my arms up while wearing it. For some people this isn't a significant obstacle, but for me it's enough that they fit tighter all over and also have a shorter cut that makes me regret not having bought the XL. Only on the head! Otherwise, this is a great shirt for the gym/exercise.