Advance Dual Sports Helmets Design; (Shields easily can be removed or raised to convert to MX helmets.) Light weight durable aerodynamic thermoplastic alloy shell; Heavily cushioned and comfortable interior, Removable and washable Beautiful glossy UV protective finish; DOT Approved; Meets Federal Motor Vehicle Safety Standard 218 (FMVSS 218). Helmet Size Chart
XS 53-54 CM 20.9/21.3 Inch
S 55-56 CM 21.7/22.0 Inch
M 57-58 CM 22.4/22.8 Inch
L 59-60 CM 23.2/23.4 Inch
XL 61-62 CM 23.8/24.1 Inch
XXL 63-64 CM 24.4/24.8 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.
XS 53-54 CM 20.9/21.3 Inch
S 55-56 CM 21.7/22.0 Inch
M 57-58 CM 22.4/22.8 Inch
L 59-60 CM 23.2/23.4 Inch
XL 61-62 CM 23.8/24.1 Inch
XXL 63-64 CM 24.4/24.8 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.