I’m in the same boat as you, typically wear an XL in everything from t-shirts to hunting jackets. I originally bought a black EVO for 60% off earlier this year and went with an XL because I just wear it around town or hiking with the family. I just ordered another one in Subalpine for backpack hunting but this time I ordered a 2XL so I can layer more easily.I did find the Mountain Evo to be what I would call a 'super athletic fit'. It's a pretty close-to-body wind shirt, for sure. I typically go XL and went XXL in the EVO, and I'm super happy I did.