I wore these shirts for the last 3 days of a 9 day trip, so I was pretty ripe. Didn't seem to stink quite as much wearing them as plain cotton shirts the previous days. They don't have a breast pocket though, usually my GPS has it's laynard around my neck and lives in the pocket. Without a pocket it was banging against my binoculars when I walked through the woods. I eventually tied it to my pack strap to keep it up out of the way.