Matthew Pizzawrote a review of Prana Tamrack Shirt - Short-Sleeve - Men's on July 22, 2016
Familiarity: I've used it several times
As far as plaid button up short sleeve shirts go, this one is pretty damn good.
The 100% organic cotton feels great up against the skin. I would say that this shirt runs pretty true to size, if you usually wear a large, get a large, but in my experience it will end up on the small side of large. If you are in between sizes, go up. The downside to the 100% cotton is that it may shrink a little, another reason to size up if you are in between sizes.
All in all, a great looking and feeling shirt.