Pros: Very comfortable They seem to move up/down very little compared to most socks Well padded in the heel for comfort Breathable upper Center arch band is nice and not too tight like some socks The box with the sock stays in place and the seam is not noticeable when worn. Very good packaging with maker's mark is a nice plus. Cons: Slightly longer, not as much as most socks but like a size 11. I expect a 9-11 doesn't fit a bit longer than my foot. That's not a big minus at all as they fit a lot better than regular 9-11 socks. All in all, these are good socks. I'll wear it for a while longer before deciding whether to buy more or not. UPDATE: It didn't take long. I have already ordered and received a second box of socks. I love these socks!