I was skeptical at first, but I put it on and it fit perfect. Sometimes button ups can be a little tight in the shoulders, but this fits just fine. The stretchy material under the arms and down the sides make the shirt awesome and breathable. The shirt is long enough to cover your waistline too. It breaks the chill without smothering as well. It's nice to have a jersey that isn't so flashy- down to earth and practical. Bliss.