1STorm Motorcycle Street Bike Dual Visor/Sun Visor Full Face Helmet Mechanic Matt Black, Size Medium (55-56 cm,21.7/22.0 Inch)
Brand: 1Storm
Color: Matt Black
Helmet Size Chart

S 53-54 CM 20.9/21.3 Inch
M 55-56 CM 21.7/22.0 Inch
L 57-58 CM 22.4/22.8 Inch
XL 59-60 CM 23.2/23.4 Inch
XXL 61-62 CM 23.8/24.1 Inch

Helmet Size Tips

(1)Wrap a measuring tape around your head about a half-inch above eyebrows
(2)Take measurement two to three times to pick the largest one.
DOT Approved; Size M (55-56 CM,21.7/22.0 Inch)
DOT Approved; Size M (55-56 CM,21.7/22.0 Inch)
Advanced Dual Lens & Quick Release Buckle Design;
Light Weight Durable Aerodynamic Thermoplastic Alloy Shell
Beautiful Glossy UV Protective Finish