I am between a large and medium shirt.. but the fit of the FX style shirts fits very well for me... I ordered a large and the fit was good... I'm more on the muscular side so they look great IMHO... I would say for anyone a size up would be wise... great shirt
This shirt is pictured in dark-brown and would have looked nice with my khaki cargo-shorts, however, the shirt which arrived is a putrid-yellow/green to nearly olive-drab. All online retailers (including the official MSR website) seem to show it in brown for some reason. Don't be fooled. Now I've gone and paid full-price for a shirt which is only useful to wrench on the bike and do yard-work in. That Sucks!
This shirt is a very soft and flexible 100% cotton which runs very much on the small side. My cotton t-shirt size has always been XL and that's what I ordered, however this is a rare case where I think an XXL might have fit better. It is stamped with XL but fits like a L. The material is of good quality and the collar is printed "Made in Nicaragua". There are no unfinished or poorly sown seams (as with most Indian or Chinese products). The graphics are printed well. It's a good quality shirt, just the wrong stinkin' color & extremely small in size.