| Rampage | XS | S | M | L | XL | XXL |
| Head Circumference | 20 7/8"- 21 1/4" | 21 1/4"- 22 1/8" | 22 3/8"- 23 1/8" | 23 1/4"- 23 3/4" | 23 7/8"- 24 3/4" | 24 7/8"- 25 3/4" |
| Hat Size | 6 5/8 - 6 7/8 | 6 7/8 - 7 1/8 | 7 1/8 - 7 3/8 | 7 3/8 - 7 5/8 | 7 5/8 - 7 7/8 | 7 7/8 - 8 1/4 |
| Striker, Flux, Transition | XS / S | S / M | L / XL |
| Head Circumference | 20 1/2"- 21 3/4" | 21 3/4"- 23 1/8" | 22 1/4"- 23 3/4" |
| 52 - 55.2 cm | 55.2 - 58.7 cm | 56.5 - 60.3 cm |
*With tape measure level, measure the widest part of your head approximately 1" above your eyebrows.
