Great socks. No itch, very comfortable and breathability/ warmth are excellent. Been running in these for about 2 weeks in the midst of an average New England winter (any and all types of weather in a days span) and can't find anything negative other than I don't think they're the absolute best fitting merino blend running sock I've ever had. I wear a 10 and went with the large size based on the size chart....after 2 weeks worth of use (insert caveat warning) I think I should have sized down. Its not a sloppy fit, I just sorta feel like there is a little too much material and around my heel I can notice a "looser" fit and a little piling on the heel cup seams.