Inner length 17cm [170] foot length is about 16-16.5cm

Inner length 18cm [180] foot length is about 17-17.5cm

Inner length 19cm [190] foot length is about 18-18.5cm

Inner length 20cm [200] foot length is about 19-19.5cm

Inner length 21cm [210] approximately size 32-33

Inner length 22cm [220] approximately size 34-35

Inner length 23cm [36/37] is it standard?

Inner length 24cm [38/39] is it standard?

Inner length 25cm [40/41] is it standard?