Me: Slim but fit, 165lbs, 5'10". Not too muscular. The medium shirt worked very well. The shirt is tummy and waist a little looser than at the chest but helps to tuck the shirt in. The sleeves are just right, not long and not short. The shirt itself sits low on my torso. Not quite low but skin was showing between the mask and torso. It fits me for more airflow. The shirt is soft and stretchy. Comfortable and breathable like all training shirts. However, I wouldn't call this shirt fully compressible or suitable for really cold weather. I see it as a basic long sleeve sweatshirt. Perfect for training or as a Costume which is why I bought it.The black shirt didn't quite match the separately purchased mask I received but they are from different companies.Not so hey eat what's up. Overall a good buy for me.
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