I am very pleased with these socks. I haven't worn them out yet because I got them for a costume They fit just above the knee. I'm 5'4".
They do seem like they might roll down after wearing them for a while, but since they're so soft and comfortable I don't mind.
My only complaint would be that the Ecurel color is just orange. A nice Halloween orange actually. It looked like the color was going to be a warm tan. Perhaps sometimes it is and mine were just a fluke? Honestly the orange is a more pleasant color, but I'll have to order another pair for my costume. I don't mind because the socks are very comfortable and I'll probably wear them a lot in the winter.
 I recommend them to anyone looking for long, comfy socks. I plan on purchasing again.