SIZING CHART
| UK Size | Diameter (mm) | Circumference (mm) | EU Size | US Size | 
| F | 14.0 | 44.0 | 44 | 3 | 
| G | 14.4 | 45.2 | 45 | 3.5 | 
| H | 14.8 | 46.5 | 46 | 4 | 
| I | 15.2 | 47.8 | 47.5 | 4.5 | 
| J | 15.6 | 49.0 | 49 | 5 | 
| K | 16.0 | 50.2 | 50 | 5.5 | 
| L | 16.3 | 51.2 | 51 | 5.75 | 
| M | 16.7 | 52.5 | 52.5 | 6.25 | 
| N | 17.1 | 53.8 | 54 | 6.75 | 
| O | 17.5 | 55.0 | 55 | 7.25 | 
| P | 17.9 | 56.2 | 56.5 | 7.75 | 
| Q | 18.3 | 57.5 | 57.5 | 8.25 | 
| R | 18.7 | 58.7 | 59 | 8.75 | 
| S | 19.1 | 60.0 | 60.5 | 9.25 | 
| T | 19.5 | 61.3 | 62 | 9.75 | 
| U | 19.9 | 62.5 | 63 | 10.25 | 
| V | 20.3 | 63.8 | 64.5 | 10.75 | 
| W | 20.7 | 65.1 | 66 | 11.25 | 
| X | 21.1 | 66.3 | 67.5 | 11.75 | 
| Y | 21.5 | 67.6 | 69 | 12.25 | 
| Z | 21.9 | 68.9 | 70.5 | 12.75 |