Although at least I actually mainly wearing size S on T-shirts, I chose here anyway precaution size M. It fits quite perfectly and do not know if I would not be too tight a smaller upper part of the arms. Although I now have really thin arms, the shirt is sitting already pretty tight, as a compression shirt is just. The sleeves are a little long and rich to me to approach the finger. The build quality is great, the seams are all clean and tidy.
Out of the box smelled the shirt a little dry, but faded at the latest after the first wash.
In sports, the top part bears very pleasant. To retire it warms, during exercise, it transports heat and moisture well outside.
