These were for me, a 5 foot adult with thin calves. Ordered size XL to be on the safe side. I've often worn high uniform socks, and although they were sometimes a bit short, they've never been too tight before. In fact they are mostly baggy in the calves while the foot has a normal fit (I wear size 7B shoes so you can see how they fit). They are very long, longer than most women's socks. But I would say that caviar is more suitable for a girl 8-10 years old. Tall teenage girls with very thin calves can handle them very well. Hope that helps!
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