| US Sizing | Approx. Age | cm | inches |
| 2 | 3-6 months | 10.5 | 4.1 |
| 3 | 6-9 months | 11.5 | 4.5 |
| 4 | 9-14 months | 12.5 | 4.9 |
| 5 | 14-18 months | 13.5 | 5.3 |
| US Sizing | Approx. Age | cm | inches |
| 2 | 3-6 months | 10.5 | 4.1 |
| 3 | 6-9 months | 11.5 | 4.5 |
| 4 | 9-14 months | 12.5 | 4.9 |
| 5 | 14-18 months | 13.5 | 5.3 |