(11.5-12.5cm)    6-12 months baby
 (12.5-13.5cm)    12-18 months Children
 (13.5-14.5cm)    18-24 months boy/girl
 (14.5-15cm)     2-3 years old boy/girl

Important: Shoe size & Age for guidance only, It is essential that you take careful measurements in order to ensure proper fit.