Dear customer: Because each country has different size label, so choose the correct size, need to measure the child's foot length,check size information.
For example: The kids foot length 11.0 cm, need to choose the insole length is 12.0 cm. because need to give the socks 1 cm space.
Insole length=Foot length (Heel to toe) + 1.0cm.
Choose Shoe Size 15 = Insole Length 12.0 (cm) / Suitable for Foot Length 11.0 (cm)
If you have any questions,Please send message,we will help you.
* Please note that due to the light and screen show, slight color difference should be acceptable, hope you can understand.