Because the size label is different,Choose the size according to your foot length (don't choose the size according to the usual size in your country!!!  Please according to Our size and internal length!!!)
please choose Size 21, if your foot length is13.5cm.
please choose Size 22, if your foot length is14cm.
please choose Size 23, if your foot length is14.5cm.
please choose Size 24, if your foot length is15cm.
please choose Size 25 , if your foot length is15.5cm.
please choose Size 26, if your foot length is 16cm.
please choose Size 27, if your foot length is 16.5cm.
please choose Size 28 if your foot length is 17cm.
please choose Size 29 , if your foot length is17.5cm.
please choose Size 30, if your foot length is 18cm.
Recommended foot length 1 cm = shoe length
Foot length 11.0 cm, recommend insole length 12.0 cm.
2.    Due to manual measurement, please allow 0-0.6cm error in size.
3.    If you have any questions, please contact our customer service first, we will help you solve it.
Please read our size chart carefully!    It can help you choose the right size based on the length of your foot.    Please note that if your feet are too long or too wide, please choose a size that is one size larger than usual.