Uniqlo might have OTC boot socks in synthetic but that's it. To me they are great conservative socks except for the fact that they are mid-calf. I don't know if you have showy or conservative tastes in socks, but I gravitate towards grays, blues, browns, olives, tans, and the occasional purple; Uniqlo matches this color palette quite well. Pre-pandemic you could get their 80-90% Supima socks, in those colors, often with interesting weaves like pique, diagonal clocks, jacquards etc. for <$3 on sale. Those were the days
And despite wearing Uniqlo most of the time for the last 7-8 years, not one pair wore out or is wearing thin (a few are showing busted elastic at the top, but the socks are still very wearable). So it's easy to forgive their short lengths. After all, knee-length socks are finicky to fit properly: this pair is not long enough, this pair is too tight around the calf and uncomfortable, that pair is too loose and falls down over the course of the day...
And despite wearing Uniqlo most of the time for the last 7-8 years, not one pair wore out or is wearing thin (a few are showing busted elastic at the top, but the socks are still very wearable). So it's easy to forgive their short lengths. After all, knee-length socks are finicky to fit properly: this pair is not long enough, this pair is too tight around the calf and uncomfortable, that pair is too loose and falls down over the course of the day...