Size Guide:
| Length | Chest | |
| 0-3 months | 11.75cm | 23cm |
| 3-6 months | 12.5cm | 25cm |
| 6-12 months | 13.25cm | 27cm |
| 1 year | 14cm | 29cm |
| 2 years | 14.75cm | 31cm |
| 3 years | 15.5cm | 32.5cm |
| 4 years | 16.25cm | 34cm |
| 5 years | 17.25cm | 35.5cm |
Size Guide:
| Length | Chest | |
| 0-3 months | 11.75cm | 23cm |
| 3-6 months | 12.5cm | 25cm |
| 6-12 months | 13.25cm | 27cm |
| 1 year | 14cm | 29cm |
| 2 years | 14.75cm | 31cm |
| 3 years | 15.5cm | 32.5cm |
| 4 years | 16.25cm | 34cm |
| 5 years | 17.25cm | 35.5cm |