The shirt is well made, even at the seams, and fits very well with me - I wear regular M at a fairly athletic build and I'm here with M cope wonderful, the compression is very noticeable but not extreme though. The arm length is also very good. I am wearing the shirt rule, in their free time or as underwear, not for sport (though I'd rather have free arms), so I can not evaluate the function under high stress. General fitness training with body weight (pushups, dips, handstand, ...) has been the shirt but not harmed.
In general, I can therefore recommend the shirt - I'm at least fully satisfied with the purchase.
