Onesie Sizing Guide
| Inches | 3-6M | 6-12M | 12-18M | 18-24M |
| Width (inches) | 9 3/8 | 9 7/8 | 10 3/8 | 10 7/8 |
| Fits Baby Length (inches) | 20-25 | 25-28 | 28-30 | 30-32 |
| Fits Baby Weight (lbs) |
12-16 | 16-22 | 22-27 | 27-30 |
| Centimeters | 3-6M | 6-12M | 12-18M | 18-24M |
| Width (inches) | 23 | 23 | 25 | 25 |
| Fits Baby Length (inches) | 51-64 | 64-71 | 71-76 | 76-81 |
| Fits Baby Weight (lbs) |
5-7 | 7-10 | 10-12 | 12-14 |