US/UK Imperial
| Size | Height (in) | Weight (in) | US/UK Size |
| 0-6 months | 20-25 1/2" | 8-16.5 lb | 6M |
| 6-9 months | 20-25 1/2" | 8-16.5 lb | 9M |
| 9-12 months | 20-25 1/2" | 8-16.5 lb | 12M |
| 12-18 months | 20-25 1/2" | 8-16.5 lb | 18M |
| 18-24 months | 20-25 1/2" | 8-16.5 lb | 24M |
EU/International Metric
| Size | Height (cm) | Weight (Kg) | EU/INTEL Size |
| 0-6 months | 50-65 cm | 3.6-7.4 Kg | 62cm |
| 6-9 months | 65-70 cm | 7.7-9.3 Kg | 68cm |
| 9-12 months | 70-80 cm | 9.5-10.7 Kg | 74cm |
| 12-18 months | 80-85 cm | 10.8-12 Kg | 80cm |
| 18-24 months | 85-90 cm | 12.2-13.6 Kg | 86cm |