Tips: How to choose the size ? Please choose size according to insole length. Insole Length = Foot Length + 0.5 cm ~ 1 cm US size 6.5 = EU size 20 = Insole Length 13.5 cm, fit for foot length 12.5 cm US size 7 = EU size 21 = Insole Length 14 cm , fit for foot length 13 cm US size 8 = EU size 22 = Insole Length 14.5 cm , fit for foot length 13.5 cm US size 8.5 = EU size 23 = Insole Length 15 cm , fit for foot length 14 cm US size 9 = EU size 24 = Insole Length 15.5 cm , fit for foot length 14.5 cm US size 9.5 = EU size 25 = Insole Length 16 cm , fit for foot length 15 cm US size 10 = EU size 26 = Insole Length 16.5 cm , fit for foot length 15.5 cm US size 11 = EU size 27 = Insole Length 17 cm , fit for foot length 16 cm US size 11.5 = EU size 28 = Insole Length 17.5 cm , fit for foot length 16.5 cm US size 12 = EU size 29 = Insole Length 18 cm , fit for foot length 17 cm US size 12.5 = EU size 30 = Insole Length 18.5 cm , fit for foot length 17.5 cm US size 13 = EU size 31 = Insole Length 19 cm , fit for foot length 18 cm US size 13.5 = EU size 32 = Insole Length 19.5 cm , fit for foot length 18.5 cm US size 1.5 = EU size 33 = Insole Length 20 cm , fit for foot length 19 cm US size 2 = EU size 34 = Insole Length 20.5 cm , fit for foot length 19.5 cm US size 2.5 = EU size 35 = Insole Length 21 cm , fit for foot length 20 cm US size 3 = EU size 36 = Insole Length 21.5 cm , fit for foot length 20.5 cm US size 3.5 = EU size 37 = Insole Length 22 cm ,fit for foot length 21 cm US size 4.5 = EU size 38 = Insole Length 22.5 cm ,fit for foot length 21.5 cm NOTE: 1.The US size is not the shoes of the standard size. 2.Please measure the length of your child’s feet，refer to the size of the table data, and then choose the shoes for your child.