| umi Size | US Size |
| 19 EU | Toddler 4-4.5 M |
| 20 EU | Toddler 5 M |
| 21 EU | Toddler 5.5 M |
| 22 EU | Toddler 6-6.5 M |
| 23 EU | Toddler 7-7.5 M |
| 24 EU | Toddler 8 M |
| 25 EU | Toddler 8.5 M |
| 26 EU | Toddler 9-9.5 M |
| 27 EU | Toddler 10 M |
| 28 EU | Little Kid 10.5 M |
| 29 EU | Little Kid 11-11.5 M |
| 30 EU | Little Kid 12-12.5 M |
| 31 EU | Little Kid 13-13.5 M |
| 32 EU | Little Kid 1 M |
| 33 EU | Little Kid 1.5 M |
| 34 EU | Little Kid 2-2.5 M |
| 35 EU | Little Kid 3-3.5 M |
| 36 EU | Big Kid 4-4.5 M |
| 37 EU | Big Kid 5-5.5 M |
| 38 EU | Big Kid 6-6.5 M |