1 Place a sheet of paper on the floor and against a wall
2 Make sure that you are wearing the same socks as you would typically wear with these kinds of shoes
3 Wearing these socks, stand on the sheet of paper with your foot perpendicular to the wall and your heel against the wall
4 Then ask your friend to draw a line just in front of the longest point of your foot. Repeat with both feet and take the longer distance to determine your size
5 Use a ruler and measure the distance between the wall and the line that you drew to find your Foot Length
6 Select your shoe size according to the chart below
The sizes in the table are racing fit, with just a couple millimeters of free space in the toebox. If you prefer more space, go for the bigger size.
| FOOT LENGTH (CM) | UK | EU | US W | US M |
| 22.7 | 3 | 35.5 | 5.5 | |
| 23.1 | 3.5 | 36 | 6 | |
| 23.5 | 4 | 37 | 6.5 | 5 |
| 23.9 | 4.5 | 37.5 | 7 | 5.5 |
| 24.3 | 5 | 38 | 7.5 | 6 |
| 24.8 | 5.5 | 39 | 8 | 6.5 |
| 25.2 | 6 | 39.5 | 8.5 | 7 |
| 25.6 | 6.5 | 40 | 9 | 7.5 |
| 26 | 7 | 40.5 | 9.5 | 8 |
| 26.4 | 7.5 | 41 | 10 | 8.5 |
| 26.8 | 8 | 42 | 10.5 | 9 |
| 27.2 | 8.5 | 42.5 | 11 | 9.5 |
| 27.6 | 9 | 43 | 11.5 | 10 |
| 28 | 9.5 | 44 | 12 | 10.5 |
| 28.4 | 10 | 44.5 | 12.5 | 11 |
| 28.8 | 10.5 | 45 | 13 | 11.5 |
| 29.2 | 11 | 45.5 | 12 | |
| 29.6 | 11.5 | 46 | 12.5 | |
| 30 | 12 | 47 | 13 | |
| 30.8 | 13 | 48 | 14 |
