The 624v4 is NB's most athletic core training style that builds upon the previous model's features of breathability, versatility and durability, but increases the all-day comfort through a larger ABZORB heel capsule, reinforced collar foam and an EVA footbed.
| US SHOE SIZE | UK SHOE SIZE |
FOOT LENGTH (Centimeters)
|
| 7 | 6 | 24.5 |
| 8 | 7 | 25.4 |
| 9 | 8 | 26.2 |
| 9.5 | 8.5 | 26.7 |
| 10 | 9 | 27.1 |
| 10.5 | 9.5 | 27.5 |
| 11 | 10 | 27.9 |
| 12 | 11 | 28.8 |
| 13 | 12 | 29.6 |
| 14 | 13 | 30.5 |