Gitano Socks for girls- a very good value for the money. They are 76% cotton, 22% nylon, and 2% spandex.
I found these socks at the dollar store. My feet are right between women’s and girl’s sock sizes. These say size 9-11, which are usually a bit large for me, but these are a perfect fit. So if you have narrow feet, shoe sizes 5 - 6.5 these should fit you very well. They are nicely narrow in the ankles. If you are small you know how hard it is to find socks that aren’t baggy. I like that they are mostly cotton too. They are cool and not scratchy. This pair is sort of light moss colored. I don’t know what other colors they come in.
They are very soft and stretchy. After wearing them for a day they relaxed quite a bit, but after washing have come back to shape well. In the long run this all might add up to loose socks that slip down on your feet, but this hasn’t happened yet.
If you are watching where things are made, these say made in Honduras with materials from the USA. Machine wash in warm water, and do not use chlorine bleach.