The Quality Matters !
(s)size 1:shoes length is 11 cm fit baby 0-6month =10.5cm insole length
(L)size 2:shoes length is 12 cm fit baby 6-12 month =11.5cm insole length
(XL)size 3:shoes length is 13 cm fit baby 12-18 month =12.5cm insole length
Warm Tips: Please choose the size according to your baby's foot length rather than age