Inclusion: Each 1 Pair or 6 Pairs
Size: S (Baby) / M (2~3Years) / L (4~5Years) / XL(6~8years)
On the top of the product tag,
it says S: (Baby) M: (3 to 4 years) L : (5 to 6 years) XL(7~9years).
But this is an age that is used only in Korea.

The real size is
S: (baby)12cm/ M:(2 to 3 years)14cm/ L:(4 to 5 years)16cm/ XL : (6~8years)19cm 
Please note this.

Machine washable
Cotton/Spandex/Polyester
These cotton socks are elastic and ideally make it suitable for Kids
You will have fun starting your day choosing which one to wear!