MSR Adult Helmets Sizing Chart

Posted by Aaron Golshen on

Adult Helmets (measure around the head just above the ears and across the forehead)
SIZE HEAD MEASURES (IN) HEAD MEASURES (CM) HAT
X-SMALL 20.9" - 21.3" 53cm - 54cm 6 1/2" - 6 5/8"
SMALL 21.7" - 22" 55cm - 56cm 6 3/4" - 6 7/8"
MEDIUM 22.4" - 22.8" 57cm - 58cm 7" - 7 1/8"
LARGE 23.2" - 23.6" 59cm - 60cm 7 1/4" - 7 3/8"
X-LARGE 24" - 24.4" 61cm - 62cm 7 1/2" - 7 5/8"
2X-LARGE 24.8" - 25.2" 63cm - 64cm 7 3/4" - 7 7/8"