Style Low-cut socks Trainer liner socks Size 81/2-12 fits children from 3 to 6 years old; Size 121/2-31/2 fits children from 7 to 10 years old; Size 4-7 fits children from 11 to 14 years old; Size 71/2-10 fits children from 14 to 16 yearsCare and composition Composition 81 % cotton, 18 % polyamide and 1 % elastaneMaintenance Machine washable Tumble dry  Keep away from fireColor: Black Material: 81% cotton, 18% polyamide, 1% elastane Material Type: Cotton