Size chart tutorial
| SIZE | CIRCUMFERENCE (MM) | UK/AUS/NZ/IE |
| 4 | 46 | H |
| 5 | 49 | J 1/2 |
| 6 | 52 | L 1/2 |
| 7 | 55 | N 1/2 |
| 8 | 57 | P 1/2 |
| 9 | 59 | R 1/2 |
| 10 | 62 | T 1/2 |
| 11 | 64.6 | V 1/2 |
| 12 | 67.2 | X 1/2 |
| SIZE | CIRCUMFERENCE (MM) | UK/AUS/NZ/IE |
| 4 | 46 | H |
| 5 | 49 | J 1/2 |
| 6 | 52 | L 1/2 |
| 7 | 55 | N 1/2 |
| 8 | 57 | P 1/2 |
| 9 | 59 | R 1/2 |
| 10 | 62 | T 1/2 |
| 11 | 64.6 | V 1/2 |
| 12 | 67.2 | X 1/2 |