I really wanted to love this.  I needed something to wear under my coaching shirts when the fields get cold.  I read all the reviews and ordered up.  Now keep in mind, I'm 5' 6" and about 137 lbs with an athletic build.  I ordered an XL.  It was a little snug everywhere which is what I expected from a compression type shirt and definitely what I wanted for wearing as a first layer.  However, the arms were so tight, I could barely bend my arms!  It cut into my arms so bad, it was unbearable, and I had to send it back.