Size--------- Inside Length(CM) Size 28: insole length 18.4cm Size 29: insole length 19.1cm Size 30: insole length 19.7cm Size 31: insole length 20.1cm Size 32: insole length 20.7cm Size 33: insole length 21.4cm Size 34: insole length 22.4cm Size 35: insole length 22.9cm Size 36: insole length 23.4cm Size 37: insole length 24.3cm Size 38: insole length 24.9cm Size 39: insole length 25.6cm Size 40: insole length 26.1cm Foot Length + (0.5~1cm)=Inner length(cm) Size Details: (1cm=0.39inch, 1inch=2.54cm) (Please choose your size according to the kid's foot length) Note: The size is measured manually, and there will be a deviation of 0.2-0.5cm

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