Pack includes 10 pairs of ankle socks, each in a solid color (black or white). Rib-knit ankle-length openings. Soft-knit, lightweight fabric, with comfortable stretch. Notched toe seams for added comfort. Size S fits shoe sizes 11-13. Size M fits shoe sizes 13-3Y. Size L fits shoe sizes 3Y-5Y. Machine wash cold, tumble dry low. spandex 2% cotton 25% polyester 73%