RoguePhotonic wrote a review of Marmot Lightweight Crew - Men's on January 6, 2012
I took three of these on a 95 day hike around the high Sierra. After all the punishment including some major bush whacking I did not end up with a single hole in any of the shirts. Because of the fabric the rodents don't touch it either adding another plus. Over all these performed better then any other shirts I have tried for long distance hiking.