All hydro are displayed in US men’s sizing.
US M = Men’s sizing. US W = Women’s sizing.
| us M |
US w |
uk |
eu |
cm |
|
3.5
|
5
|
3
|
35.5
|
22
|
|
4
|
5.5
|
3.5
|
36
|
22.5
|
|
5
|
6
|
4
|
36.5
|
23
|
|
6
|
6.5
|
4.5
|
37.5
|
23.5
|
|
5.5
|
7
|
5
|
38
|
24
|
|
6
|
7.5
|
5.5
|
38.5
|
24
|
|
6.5
|
8
|
6
|
39
|
24.5
|
|
7
|
8.5
|
6
|
40
|
25
|
|
7.5
|
9
|
6.5
|
40.5
|
25.5
|
|
8
|
9.5
|
7
|
41
|
26
|
|
8.5
|
10
|
7.5
|
42
|
26.5
|
|
9
|
10.5
|
8
|
42.5
|
27
|
|
9.5
|
11
|
8.5
|
43
|
27.5
|
|
10
|
11.5
|
9
|
44
|
28
|
|
10.5
|
12
|
9.5
|
44.5
|
28.5
|
|
11
|
12.5
|
10
|
45
|
29
|
|
11.5
|
13
|
10.5
|
45.5
|
29.5
|
|
12
|
13.5
|
11
|
46
|
30
|
|
12.5
|
14
|
11.5
|
47
|
30.5
|
|
13
|
14.5
|
12
|
47.5
|
31
|
|
13.5
|
15
|
12.5
|
48
|
31.5
|
|
14
|
15.5
|
13
|
48.5
|
32
|
|
15
|
16
|
14
|
49.5
|
33
|
|
15.5
|
N/A
|
14.5
|
50
|
34
|
|
16
|
N/A
|
15
|
50.5
|
34.5
|
