sizing_native_kids
Kids Sizing
| ALTI SIZES | EUR | UK | JP/CM | Inches | Approx. Fits |
| 4K | 19 | 3 | 12 | 4.75 | 12 - 18 Months |
| 5K | 20 | 4 | 12.5 | 4.9 | 12 - 18.5 Months |
| 6K | 22 | 5 | 13.5 | 5.3 | 18 Months - 2.5 Years |
| 6.5K | 22.5 | 5.5 | 13.75 | 5.4 | 18 Months - 2.5 Years |
| 7K | 23 | 6 | 14 | 5.5 | 18 Months - 2.5 Years |
| 7.5K | 23.5 | 6.5 | 14.5 | 5.7 | 18 Months - 2.5 Years |
| 8K | 24 | 7 | 15 | 5.9 | 3 - 4 Years |
| 8.5K | 24.5 | 7.5 | 15.5 | 6 | 3 - 4 Years |
| 9K | 25 | 8 | 16 | 6.3 | 3 - 4 Years |
| 9.5K | 26 | 8.5 | 16.5 | 6.5 | 3 - 4 Years |
| 10K | 27 | 9 | 17 | 6.7 | 5.5 - 6 Years |
| 10.5K | 27.5 | 9.5 | 17.25 | 6.8 | 5.5 - 6 Years |
| 11K | 28 | 10 | 17.5 | 6.9 | 5.5 - 6 Years |
| 11.5K | 28.5 | 10.5 | 18 | 7 | 5.5 - 6 Years |
| 12K | 29 | 11 | 18.5 | 7.2 | 6.5 Years |
| 12.5K | 30 | 11.5 | 18.75 | 7.5 | 6.5 Years |
| 13K | 31 | 12 | 19 | 7.7 | 6.5 Years |
| 13.5K | 31.5 | 12.5 | 19.25 | 7.9 | 6.5 Years |
Youth Sizing
| ALTI SIZES | EUR | UK | JP/CM | Inches | Approx. Fits |
| 1 | 32 | 13 | 20 | 7.9 | 6.5 Years |
| 1.5 | 32.5 | 13.5 | 20.5 | 8 | 6.5 Years |
| 2 | 33 | 1 | 21 | 8.2 | 7 Years |
| 2.5 | 33.5 | 1.5 | 21.5 | 8.45 | 7 Years |
| 3 | 34 | 2 | 22 | 8.6 | 7.5 Years |
| 3.5 | 34.5 | 2.5 | 22.5 | 8.85 | 7.5 Years |
| 4 | 35 | 3 | 23 | 9 | 8 Years |
| 4.5 | 35.5 | 3.5 | 23.25 | 9.15 | 8 Years |
| 5 | 36 | 4 | 25.5 | 9.25 | 9 - 10 Years |
| 5.5 | 36.5 | 4.5 | 24 | 9.45 | 9 - 10 Years |
| 6 | 37 | 5 | 24.5 | 9.6 | 10 - 11 Years |