Bought the XL Gray Heather version six months ago. I have size mens 13 feet and they fit great and aren't sheer like other brands I've tried. They held up as long as I expected, the one big downfall has been how tight the elastic band is around the ankle. I don't have particularly large ankles, but at least once I week, I wake up in the morning with the elastic dug into the back of my foot and it's tender for about a half an hour after. Haven't had this issue with any other sock brand and doesn't feel as tight during the day. I'll have to do a coin toss to decide whether to try my luck at another couple packs because I genuinely appreciate all other aspects of the socks.