I use the shirt in sports-oriented rollerblading. Especially in the so-called. "Transitional period" does the shirt its strengths to the full. Is it a little cooler outside, the shirt is donating enough heat, it will go warmer, a significant cooling effect is felt. I have no idea why this is so, but the feel is very pleasant. With 1,97m height and reasonable ~ 100kg weight the shirt fits like a second skin XL, nothing slips or scrubs. Only the sleeve could be a bit longer. But that is used sometimes as a "long beanpole" anyway.