Vanessa wrote a review of SmartWool PhD Running Ultra Light Micro Sock on July 5, 2014
Familiarity: I've used it several times
Fit: True to size
I got the "silver" colored sock and don't let the picture fool you. The sock looks like at old, dirty, washed-with-the-dark-load sock. Other than that realize that these are very thin socks, not that that's bad, but I didn't realize it until I put them on. Might be a little thinner than I prefer, and way thinner than I am use to. Not a bad sock though, but that's obvious when it's smart wool.