shirt is thin + light. comfortable to wear. Cotton is indeed more pleasant on the skin - but those who appreciate outdoor suitability, is served here is better - it is super fast dry when sweating or rain! I have several jack w. Shirts - mostly in XL, cause I like a little more permeable. Here the collar is very wide cut - for me L would have been better. chest pockets are a good size - I always need 2 of them.