

Age | AUS Sizing | US Sizing | CM | INCHES |
0-3 months | 17 | 1.5 | 10 | 3.9 |
3-6 months | 18 | 2 | 10.8 | 4.25 |
6-9 months | 19 | 3 | 11.5 | 4.5 |
9-12 months | 20 | 4 | 12.2 | 4.8 |
12-15 months | 21 | 5 | 12.8 | 5.04 |
15-18 months | 22 | 6 | 13.4 | 5.27 |
18-21 months | 23 | 7 | 14.2 | 5.59 |
21-24 months | 24 | 8 | 15 | 5.9 |