Simple braid; 77% cotton, 20% nylon, 3% spandex. I like that the socks hold their shape when removed - they don't stretch like cheaper socks. Like other reviewers, I found the sizing vague, so I'm including the sizes from the Gold Toe label: S = shoe size 3-8.5; Medium = shoe size 9-1.5; Large = shoe size 2-10.5. My daughter wears size 1 shoes and the medium socks fit her perfectly.
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