I LOVE this performance tee. It is fitted, comfortable, and long in the torso. I was worried about it being too tight, but the fit is not clingy and is breathable. I got a S, but probably could have gone smaller (I am 5'4", 115 lbs). I personally like a little extra room/fabric with all my clothes, so am happy with the S. I will probably end up buying another one in a different color!