I decided to order these because the extraordinary thigh-highs ended up being a little too high for my short stubby legs. Just as I hoped, the seafoam and lilac socks ended up being a respectable mid-thigh height on me. But for some reason the pink socks are shorter? You can the difference in the two photos where I'm wearing the same skirt. Just to check that my eyes weren't deceiving me, I lined them up (on top of my whale plushie) to compare, and yeah, the pink socks are significantly shorter than the other two colors. I'd say they're more of a true OTK, just barely going over my knees.
It doesn't bother me too much, and I can still make them work, but it is a bit confusing lol. The material is different from the Extraordinary Thigh Highs, not quite as smooth, but still very comfortable. I wore them out in 70 degree weather without a problem. They stay up well on their own, though I'd still use glue if I'm wearing them all day. I also like how I can wear them cuffed below the knee and they still look good. Makes them very versatile!