I bought these as part of the pack of three, I've been on the look out for some warm socks that come up over the ankle, and decided to give these a try, and haven't been disappointed.
They're warm while remaining lightweight, they're extremely comfortable, and don't leave you feeling like you're wearing wet socks on long runs. I wore a pair to try out successfully on a 5k and then for a Half Marathon distance run, and had no issues, no rubbing, no blisters etc.
I'm a UK size 10, and so ordered the Large/XL, which fit great, but I have a bad habit of pulling the socks tight when putting them on which pulls the heal too far up, leaving me having to readjust them to get them to sit where they should (this is a me issue, not a sock issue). I have ordered one pair of the next size down just to see how they compare size wise, with me pulling them tighter