| Size | Age (Approx) | Chest | Length | Shoulder |
| 4 | 4 - 5Y | 28.3 | 18.5 | 12 |
| 6 | 5 - 6Y | 29.9 | 20.1 | 13 |
| 8 | 7 - 8Y | 31.5 | 21.7 | 14 |
| 10 | 9 - 10Y | 33.9 | 23.2 | 15 |
| 12 | 10 - 12Y | 37.0 | 24.8 | 16.1 |
| 14 | 12 - 13Y | 38.6 | 25.8 | 16.7 |
| 16 | 13 - 14Y | 40.2 | 26.8 | 17.3 |
| 18/20 | 14 - 16Y | 41.7 | 27.8 | 17.9 |
All measurements are in inches. Measurements are taken manually and may vary slightly.