For years I've been searching for the perfect trouser socks that will: reach all the way to the knees, stay up without cutting off leg circulation, and is made of durable material that is not too thick or too thin. I'm still searching. These socks are at least adequate until I find something else. The material is very thin and damages easily--I've already punched a hole in one sock with a toenail that was just a tad too sharp. The sizing seems inconsistent. Some come all the way up to the knees while others are several inches below. One package had one sock that came up to the knee while its "mate" was half its length. How did that happen? I tossed the extra-short sock and paired the other one with the "widow" of the one that I had put a hole through. So far, these socks do stay up while wearing them, but I'm not sure they will after several wearings and washing. My search goes on.