Product Information: 

Monster Toe Non-Slip Socks

Material: 100% Cotton

S size (suitable for foot length 7-9cm): 0-6 months

M size (suitable for foot length 9-11cm): 6-12 months 

L size (suitable for foot length 11-13cm): 12-24 months

Please check the sizing information above carefully before you purchase the item. If you do not know which size you should choose, please contact customer service.