MSR Helmet Size Chart

MSR Velocity Helmet
Adult Helmets
Size Head Measures Head Measures 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"
MSR Youth Assault Helmet - 2012
Youth Helmets
Size Inches Centimeters
Youth Small 18 1/2" - 19 1/8" 47 -48.5cm
Youth Medium 19 1/4" - 19 7/8" 49 -50.5cm
Youth Large 20" - 20 1/2" 51 -52cm

Measure around head just above the ears and across the forehead.

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.