We have a pair of these socks for each daughter. I think they work a bit on the lower end of the range. We have a medium for my 7 year old daughter who is carrying a 13 year old. I can't imagine her wearing them for too long. We have a pair of Minnie's Blush socks. They're cute and quite versatile, but please note that not all socks in the set are patterned. This is a synthetic material, so they don't let air through. My daughter also finds them bulky in the toe area. It's ok, but I wouldn't order them again.
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