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| SIZE | INCHES (IN) | CENTIMETERS (CM) |
| Youth Small | 18 1/2" - 19 1/8" | 47 - 48.5 cm |
| Youth Medium | 19 1/4" - 19 7/8" | 49 - 50.5 cm |
| Youth Large | 20" - 20 1/2" | 51 -52 cm |
MSR Youth Helmets Sizing Chart
Youth Helmets (measure around the head just above the ears and accross the forehead)