Deer Mum Children Warm Wool Socks (6 Pairs) Material:Cotton Machine wash Size: S fits to 2-4 years old boys, M fits to 4-6 years old boys, L fits to 6-8 years old boys, XL fits to 9-12 years old boys Package: 6 Pairs of Socks, 6 colors included Super soft and comfy, absorb sweat, antibacterial, prevent beriberi.