Amscan Boys Size Chart
| Size | Height | Chest | Waist | Weight |
| Small(4-6) | Up to 44" | 24" | 23" | Up to 55 lbs. |
| Small/Mediuim | Up to 54" | 27.5" | 25.5" | Up to 75 lbs. |
| Medium(8-10) | Up to 54" | 27.5" | 25.5" | Up to 75 lbs. |
| Medium/Large | Up to 61" | 30.5" | 28" | Up to 95 lbs. |
| Large(12-14) | Up to 61" | 30.5" | 28" | Up to 95 lbs. |
| X-Large(14-16) | Up to 63" | 32" | 29.5" | Up to 120 lbs. |