US 7=CN 24=Insole length 15cm US 7.5=CN 25=Insole length 15.5cm US 8=CN 26=Insole length 16cm US 9=CN 27=Insole length 16.5cm US 10=CN 28=Insole length 17cm US 11=CN 29=Insole length 17.5cm US 11.5=CN 30=Insole length 18cm US 12.5=CN 31=Insole length 18.5cm US 13.5=CN 32=Insole length 19cm US 1=CN 33=Insole length 19.5cm US 2=CN 34=Insole length 20cm US 3=CN 35=Insole length 20.5cm Note: The size is not a standard size, please choose the size according to the length of the shoe. 1. Foot length + about 2-3cm=Insole length 2. If the child's foot is too fat or wide, choose the big one. 3. Shoes are suitable for children around 1-7 years old