Love them!!! - One comment on sizing
These socks are fantastic for running. Very very comfortable and they breath. I get very sweaty feet when i run and these wicked away the moisture and didn't feel damp like most of my other socks after a run. They are thin, which I prefer too, but strong in the important places. I bought 3 pairs, and plan to buy more! Only comment is the sizing. I wear a woman's size 9 and purchased a medium. I found that the heel didn't fit right and bunched slightly in the back. Not enough that it was bothersome, but it made me think i might have been able to get a small.