Size guide

UK EU US
3 35.5 3.5Y / W5
3.5 36 4Y / W5.5
4 36.5 4.5Y / W6
4.5 37.5 5Y / W6.5
5 38 5.5Y / W7
5.5 38.5 6Y / W7.5
6 39 6.5Y / W8
6.5 40.5 7.5Y / W9
7 41 8M / W9.5
7.5 42 8.5M / W10
8 42.5 9M / W10.5
8.5 43 9.5M / W11
9 44 10
9.5 44.5 10.5
10 45 11
10.5 45.5 11.5
11 46 12
11.5 47 12.5
12 47.5 13