When you choose the size, please not only judge from the age, as different children have different head circumference even at same age, please measure your children's head circumference carefully, if your children's head is big, please choose a bigger size, thanks.
Some children may need to buy 1 bigger size or even 2 bigger sizes.
size 48( 6months to 12 months),suggest for kid's head circumference within 46-47cm
size 50(1-3 years):suggest for kid's head circumference within 48-49cm
size52(3-5 years):suggest for kid's head circumference within 50-51cm
size 54(5-8 years):suggest for kid's head circumference within 52-53cm
