Best base layer ever
I wore this shirt pretty much daily for over a month while trekking and mountaineering in the Himalayas (I used the short sleeve version when it was warmer). It's perfect weight, very comfortable, wicks moisture, stays funk free, and the quarter zip is awesome for extra venting. The shirt pocket is nice, too. I also have the version without the zipper, which looks nicer for wearing outside of the wilderness, but doesn't have the same functionality offered by the quarter zip for backcountry use.