I loved the look of the tee so much that I exchanged it twice to see if one size would work for me.  However, at 5'11" - 185 lbs, the large was too large and the medium was too small and I finally gave up.  Adidas must be catering to the "over-weight American" because their shirts seem to always be a 1/2 size larger than Nike, UA, et. al.