Under ArmourMen Raid Short Sleeve Shirt

I bought one of these a couple months ago, and it definitely ran large like others have said here. I initially ordered XL (I'm 6'4" 230 lbs with pretty muscular upper body), and it was too big and baggy to be considered fitted. Exchanged it for a L, and it was perfect. If you're on the fence of which size to get, definitely order the smaller size. I've seen some negative comments about how long the shirts are, but I found the length was perfect. I could see how that would be a problem if you're shorter, but I always have a harder time finding shirts that are long enough, so if you're tall, you'll like how this fits. Very light, very comfortable, love the mesh on the back. Kept me cool on a few particularly hot upper 90 degree days. Only complaint with this shirt is that it shows sweat really easily, and tends to cling to you if it does get really wet. Overall though I love it, and I just ordered another one!

I've been looking for a tight fitting shirt to workout in for a while. I'm an average height (6'), slim guy (30" waist) with a long torso and a slightly wider than average chest. A lot of other shirts I've had have been too loose around the upper body and arms or just too short . The medium size fits my torso perfectly and is just tight enough around the arms. Would definitely recommend this shirt to my fellow slim body builders.