1-A Size guide

EVA

US EU UK
4 20 3.5
5 21 4.5
6 22.5 5.5
7 23.5 6.5
8 25 7.5
8.5 25.5 8
9 26 8.5
10 27.5 9.5
11 29 10.5
12 30 11.5