Hey, I'm going to pick up an eco-mesh shirt from RR while they are on special, with an intended use on a future PCT thru-hike. I'm normally a solid medium in pretty well every brand, having a 40" chest (e.g Patagonia, Icebreaker, Arc'teryx, Rab etc). With RR this would suggest a Large, but since this accommodates up to 42" I'm thinking it might fit like a tent. I get that's kind of the idea with these shirts, but I'm thin in the waist and don't like more excessive bunching there… Can anyone comment on the fabric allowances above the measured chest measurements and whether I should be right with the medium? I will be mail forwarding to Australia and sadly don't have the luxury of just buying both and returning one. Also, as a quick aside, I see a lot of recommendations for white to maximise desert sun reflection but how much dirt does the fabric hold? I'm not that precious, but I'm thinking about the possible need to wear this in polite society (not necessarily on the thru) and at the very least get picked up while hitching… another colour that hides the dirt may have broader practical benefits?
