DayJahwrote a review of SmartWool PhD Running Light Mini Sock on January 16, 2013
Familiarity: I've used it several times
These are my favorite of my recent Smartwool purchases. They stay in place during biking or hiking, never bunch and keep my feet comfy and not sweaty like cheap socks. They are still a bit on the thick side, so go for ultralight if you want less cushion.