Dear customer: thank you for shopping in our shop.

Measurement method:
1.Foot length. Please make sure the feet is totally perpendicular to the floor without any arch.Then measure the distance from thumd to the heel.
2.Inner length. Get an insole which is most suitable for your kid.

---Please pay attention to the size difference, get your kids the best and most suitable shoes.(error:+/-0.3cm)
(we suggest foot length+0.5cm=inner length)
Free shipping. I wish you a happy life! ! !