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Find out more about N-Pro and how to reduce the G-Force energy transferred to a player's head during impact; one of the major factors in sports-induced brain injury.
| Size | cm |
| MC: Medium Child | 51cm |
| LC: Large Child | 53cm |
| S: Small Adult | 55cm |
| M: Medium Adult | 57cm |
| L: Large Adult | 59cm |
Place a measuring tape around the head at eyebrow level, and measure the circumference of the head.
Choose which size is suitable for you from the table above.
If your head circumference is between sizes, select the larger size.
