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MSR Helmets Size Chart

MSR MX Helmets
Size Head Circumference (in)
XS 20.9" - 21.3"
S 21.7" - 22"
M 22.4" - 22.8"
L 23.2" - 23.6"
XL 24" - 24.4"
2XL 24.8" - 25.2"
MSR ADV Helmets
Size Head Circumference (in)
S 21.7" - 22"
M 22.4" - 22.8"
L 23.2" - 23.6"
XL 24" - 24.4"
2XL 24.8" - 25.2"

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