Pack includes 6 pairs of ankle socks, each in a different color. Rib-knit openings. Mesh top for breathability. Arch support. Go-Dry moisture-wicking technology keeps him dry & comfortable. Soft cotton blend, with comfortable stretch. Sporty contrasting stripes under foot. Gray Combo pack only: 61% cotton, 35% polyester, 2% spandex, 2% rubber (solid colors); 72% cotton, 24% polyester, 2% spandex, 2% rubber (marled colors). Notched toe seams for added comfort. Megawatt Orange Neon pack only: 61% cotton, 35% polyester, 2% spandex, 2% rubber (solid colors); 96% cotton, 2% spandex, 2% rubber (neon colors). Size S = 11-13 shoe size. Size M = 13-3Y shoe size. Size L = 3Y-5Y shoe size. Machine wash cold, tumble dry low.