Hi-Tec Children's Footwear Size Guide
| Size | UK Size | EU Size |
| 5 Infant | 4 | 23 |
| 6 Infant | 5 | 24 |
| 7 Infant | 6 | 25 |
| 8 Children | 7 | 26 |
| 9 Children | 8 | 27 |
| 10 Children | 9 | 28 |
| 10.5 Children | 9.5 | 28.5 |
| 11 Children | 10 | 29 |
| 11.5 Children | 10.5 | 29.5 |
| 12 Children | 11 | 30 |
| 12.5 Children | 11.5 | 30.5 |
| 13 Children | 12 | 31 |
| 13.5 Junior | 12.5 | 31.5 |
| 1 Junior | 13 | 32 |
| 1.5 Junior | 13.5 | 32.5 |
| 2 Junior | 1 | 33 |
| 2.5 Junior | 1.5 | 33.5 |
| 3 Senior | 2 | 34 |
| 3.5 Senior | 2.5 | 34.5 |
| 4 Senior | 3 | 35 |
| 4.5 Senior | 3.5 | 36 |
| 5 Senior | 4 | 37 |
| 5.5 Senior | 4.5 | 37.5 |
| 6 Senior | 5 | 38 |
| 6.5 Senior | 5.5 | 38.5 |
| 7 Senior | 6 | 39 |