When trying to decide between two sizes, choose the larger size for a better fit.
| Size | Chest | Waist | Hips | Height | Weight |
| Newborn(0-6) | 17-18 | 18-19 | 18 | 23-26 | 12-16lbs |
| Infant (6-12) | 18-19 | 18-19 | 19 | 26.5-29.5 | 12-20lbs |
| Infant (12-18) | 19-20 | 19-20 | 19-20 | 28-32 | 20-26lbs |
| Toddler (2T) | 20-21 | 19-20 | 20-21 | 33-36 | 27-30lbs |
| Toddler (3T-4T) | 22-23.5 | 20-22 | 22-23 | 37-43 | 34-38lbs |
| Toddler (4-6) | 26 | 23.5 | 26 | 43-49.5 | 36-47lbs |
| Toddler (5T-6T) | 26 | 23.5 | 26 | 43-49.5 | 36-47lbs |
| Medium (7-8) | 26.5 | 24.5 | 27.5 | 50-53.5 | 48-60 |
