With flexible outsole that is also non-slip to make sure your baby stays safe when learning to take their first steps.
size-----age--------length-------------width
1-S----0-6M ----11.2cm/4.41"----5.6cm/2.20"
2-M----7-12M----12.5cm/4.92"----5.8cm/2.28"
3-L----13-18M----13.2cm/5.20"----6.1cm/2.40"