I usually wear a Columbia sun shirt but chose the Bassdash because of the price. I wear Large Columbia but need XLarge in Bassdash to get the same fit. I like the mesh on the inside of the arms and lower back. I think it works to keep me cool. The only thing I don't like, and the reason I gave this shirt 4 stars instead of 5, is that the neckline is much larger than Columbia's. I find the Large Columbia Shirts perfect for me. I'm 6'0 and 210 lbs. However, this appears to be a well-tailored shirt and good value for the money. I have a few more colors in mind and will consider buying these again instead of the Columbia. Update August 11, 2021 I got rid of the big neck. Although I prefer the smaller Columbia t-shirts with a slimmer neckline, this is a great shirt and I've bought several more. So I am changing my rating from 4 to 5 stars.