Please notice that the size above is inner length. And there maybe 0-1cm error due to the measure by hand. The size you need=length of your child's feet+1~2cm Please choose the bigger size for the children feet grow very fast.

• US size 5.5=CN size 21(shoes inner length 13.3cm)
• US size 6=CN size 22(shoes inner length 14cm)
• US size 7=CN size 23(shoes inner length 14.6cm)
• US size 8=CN size 24(shoes inner length 15.3cm)
• US size 8.5=CN size 25(shoes inner length 16cm)
• US size 9.5=CN size 26(shoes inner length 16.6cm)
• US size 10=CN size 27(shoes inner length 17.3cm)
• US size 11=CN size 28(shoes inner length 18cm)
• US size 11.5=CN size 29(shoes inner length 18.7cm)
• US size 12.5=CN size 30(shoes inner length 19.4cm)
• US size 13.5=CN size 31(shoes inner length 20cm)
• US size 1=CN size 32(shoes inner length 20.7cm)
• US size 2=CN size 33(shoes inner length 21.3cm)
• US size 3=CN size 34(shoes inner length 22cm)
• US size 3.5=CN size 35(shoes inner length 22.6cm)
• US size 4=CN size 36(shoes inner length 23.3cm)
• US size 5=CN size 37(shoes inner length 24cm)