I have been looking for a good warm sock for a while and thought I would give this sock a try.  Even though, to me, it was a little expensive for a pair of socks, it was worth it.  The Carhartt Arctic Wool is thick and warm and was worth the price.  If I had one complaint is the sizing was a little off.  I'm a size 10 shoe but needed the Extra Large which is for an 11 to 15 shoe to get the fit I wanted.