Size Guide example
Inner Diameter (mm) | US Size | UK | EU Size | Spain |
13 | 0 | A | 41 | 1 |
13.3 | 0 | B | 42 | 2 |
13.6 | 0.5 | C | 43 | 3 |
14 | 1 | D | 44 | 4 |
14.3 | 1.5 | E | 45 | 5 |
14.6 | 2 | F | 46 | 6 |
14.9 | 2.5 | G | 47 | 7 |
15.2 | 3 | H | 48 | 8 |
15.5 | 3.5 | I | 49 | 9 |
15.9 | 4 | J | 50 | 10 |
16.2 | 4.5 | K | 51 | 11 |
16.5 | 5 | L | 52 | 12 |
16.8 | 5.5 | M | 53 | 13 |
17.1 | 6 | N | 54 | 14 |
17.4 | 6.5 | O | 55 | 15 |
17.8 | 7 | P | 56 | 16 |
18 | 7.5 | Q | 57 | 17 |
18.4 | 8 | R | 58 | 18 |
18.7 | 8.5 | S | 59 | 19 |
19 | 9 | T | 60 | 20 |