This is the perfect tee shirt. It is a nice weight (not too heavy, but not that tissue-thin style that some brands are pushing these days either) and retains its shape during wearing. Like all Patagonia stuff, it holds up well and does not shrink too much in the dryer. The retro look is cool too. Good stuff.
Great weight -- not too heavy, but not light and see-through. The distressed/aged/whatever logo looks very cool. My only complaint is the length -- it's an inch or two longer than most. I had to size up though because the slim fit means slim fit.