10-IS size guide is showing both insole length and width. The shoes for children are from size 22 to 38.
Size Guide shoes 22-30
| Size | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|
| Insole lenght (mm) | 142 | 148 | 154 | 160 | 166 | 172 | 180 | 187 | 193 |
| Insole width (mm) | 56 | 57 | 58 | 59 | 60 | 61 | 63 | 65 | 66 |
Size Guide shoes 31-38
| Size | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 |
|---|---|---|---|---|---|---|---|---|
| Insole lenght (mm) | 202 | 206 | 213 | 219 | 230 | 237 | 244 | 250 |
| Insole width (mm) | 68 | 69 | 70 | 72 | 79 | 81 | 82 | 84 |