Material: Sheepskin Geniune Leather + wool
Size(US size, insole length, baby age):
size 2=S(insole length 12 cm)--shoe length 13 cm-- fit for 6-12 months baby
size 3=M(insole length 13 cm)-- shoe length 14 cm-- fit for 12-18 months baby
size 4=L(insole length 14 cm)-- shoe length 15 cm-- fit for 18-24 months baby.
There is a deviation of 0.5-1 cm as the reason of laying relax.