Material:Cotton/Spandex blend stretches to fit your foot perfectly Feature: Deer Mum girls dress knee socks featuring perfect mix of princess styles designed by our own team Pack: Color and pack as seen on the picture Size XS : 9cm - 15cm (3.54''-5.90''),advise 1-3 years old kids to wear Size S : 15cm - 19cm (5.90''-7.48''),advise 3-6 years old kids to wear Size M : 19cm - 23cm (7.48''-9.06''),advise 7-12 years old kids to wear