Please choose size according to insole length.
Insole Length = Foot Length + 0.5 cm ~ 1.0 cm.You can also add 1.5 cm.
If the foot length is 16 cm, 16 cm + 0.5 cm ~ 1.0 cm= 16.5 cm ~ 17 cm , then you can choose the corresponding UK size to make order.
1.Differrent countries have different size definition
2.Compare the detail size with yours,allow 0.5-1CM error due to manual measurement.thanks!
3.Dear customers,if you are not sure about your size,pleae do not hesitate to contact us.
Fast and easy-to-reach Customer service to solve your problems within 24 hours. If you come across any problem, please contact us to get our professional and efficient support.