Kristian Alexandre™ Rain Boot Size Chart
| US Size | EU Size | Insole Length | Height | UK Size |
| 5 | 21 | 150 mm | 16 cm | 4 |
| 6 | 22 | 157 mm | 16 cm | 5 |
| 7 | 23 | 165 mm | 20 cm | 6 |
| 8 | 24 | 170 mm | 20 cm | 7 |
| 9 | 25 | 178 mm | 20 cm | 8 |
| 10 | 26 | 185 mm | 20 cm | 9 |
| 11 | 27 | 194 mm | 20 cm | 10 |
| 12 | 28 | 200 mm | 25 cm | 11 |
| 13 | 29 | 206 mm | 25 cm | 12 |
| Big Kid 1 | 30 | 212 mm | 25 cm | 13 |
| Big Kid 2 | 31 | 220 mm | 25 cm | 1 |
| Big Kid 3 | 32 | 231 mm | 25 cm | 2 |