shoes size insole length Suitable Foot lenth
cm inch cm inch
21 13.5 5.3 13 5.1
22 14 5.5 13.5 5.3
23 14.5 5.7 14 5.5
24 15 5.9 14.5 5.7
25 15.5 6.1 15 5.9
26 16.4 6.5 15.9 6.3
27 17 6.7 16.5 6.5
28 17.7 7.0 17.2 6.8
29 18.3 7.2 17.8 7.0
30 19 7.5 18.5 7.3