Only adult sizes can be used as a reference.The size may be slightly larger or smaller depending on the size number, but the inner length is accurate and not off by much.Domestic children's sizing standards are not uniform, please choose the size based on the inner length.The insoles are mass-produced, with a length deviation of �0.2cm
For leather shoes, it is recommended to measure the length of your foot. If your foot is not wide, add 0.8-1cm to your foot length. If your foot is wide and has a high instep, add 1.5cm to your foot length for the insole length. Alternatively, you can measure the insole length of a pair of suitable sports shoes or leather shoes and use that as the insole length to choose your size.
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