Sizing Guide
A basic sizing guide is below. To measure your or your child's head circumference, use a piece of string or sewing measuring tape, and wrap it around your head just above your ears.
| Age | Head Circumference |
| Preemie/Sm Newborn | 11-12 inches |
| 0-3 Months | 13-15 inches |
| 3-6 Months | 15-17 inches |
| 6-12 Months | 16-19 inches |
| 1-3 Years | 18-20 inches |
| 3-9 Years | 19-22 inches |
| Adult | 21-23 inches |