These are some of the best socks I own. They fit great, and there is no slipping inside my ski boot. I thought they were a little thick when I first took them out of the bag, but alas, they are not. The shin padding has helped a TON from boot-bang, and they aren't to girly that you feel like you are wearing pepto-bismol. A+ I wear a 9-10 in shoe size, and ordered Large. They fit great.