I'm a huge fan of the old standard ragsocks. I've bought a few back in the 70-80s and now I'm reentering backpacking. and my stach of socks are wearing out, and it's getting to the point that I should be looking for replacements. It's starting to look like these are not made anymore. at least not in robustness & cushion quality, that I remember...and certainly not in knee height which I prefer. are these even available on line? or have they gone the way of buggy whips?