I've spent some hot, hot days outside in the sun with this shirt on. It keeps me dry and cool - as much as a shirt can be held responsible for such a feat when working in a canyon when it's 90+F outside and full bluebird sky. Unless I tuck it in, I tend to look like I'm all love handles. You can swim in this shirt if you order the size you'd expect to fit. Something to consider.
Los Angelas, CA