Helmet Measurements:
- Measure circumference of head using fabric tape measure
- Measurement should be taken just above eyebrows and ears: Approximately 1" (25mm)
| A1 | Hat Size | Circumference (in) | Circumference (cm) |
| Universal Youth | 6 - 6-3/4" | 19 - 21-1/4" | 48 - 54cm |
| S | 6-3/4 - 7" | 21-1/4 - 22" | 54 - 56cm |
| M/L | 7-1/8 - 7-3/8" | 22-3/8 - 23-1/4" | 57 - 59cm |
| XL/2XL | 7-1/2 - 7-3/4" | 23-5/8 - 24-3/8" | 60 - 62cm |
| A2 | Hat Size | Circumference (in) | Circumference (cm) |
| S | 6-3/4 - 7" | 21-1/4 - 22" | 54 - 56cm |
| M/L | 7-1/8 - 7-3/8" | 22-3/8 - 23-1/4" | 57 - 59cm |
| XL/2XL | 7-1/2 - 7-3/4" | 23-5/8 - 24-3/8" | 60 - 62cm |
| A3 | Hat Size | Circumference (in) | Circumference (cm) |
| XS/S | - | 20-7/8 - 22" | 53 - 56cm |
| M/L | - | 22-3/8 - 23-1/4" | 57 - 59cm |
| XL/2XL | - | 23-5/8 - 24-3/4" | 60 - 63cm |
Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.
