Pros: Compact, Durable, Full Featured, Comfortable
Cons: Expensive
"The shirts are extremely comfortable and lightweight. A medium's the best fit for me. However, I'm 6'4", and the only problem I have is that I wish they were a little longer. I have to pay good attention to the level of my pants when I'm wearing this shirt.
I have three at the moment: orange, green, and white. I wear the orange and green quite a bit, especially when travelling as they pack down so efficiently and are great for warmer weather or sitting in a car for a long period of time.
However, I never wear the white one unless I'm out in the middle of nowhere. It's really transparent. I have dark chest hair and it can be seen straight through the shirt. It's like I have a giant bat-signal on my t-shirt... but not in a cool way."