1 inch =2.54cmPls Check The Size Chart For Reference:
size age length width
1-S 0-6M 11cm/4.33" 5.6cm/2.20"
2-M 7-12M 12cm/4.72" 5.8cm/2.28"
3-L 12-18M 13cm/5.12" 6.0cm/2.36"
Note:Please choose the size by Sole Length, the age is just for reference. Measure the length of your baby's foot and add 0.5 to 1 cm to get the Sole length and your baby's appropriate shoe size.