Arai Helmets Signet-Q Pro-Tour Scheme Helmet Blue XL 818354 Incorporates new Pro Shade shield system Features brand new Eco-Pure liner, softer feel, anti microbial properties to maintain freshenss between washes, does not attract or hold dirt as readily Special accomadations for mounting speakers in the ear cup area Slightly longer front to back length than the RX-Q for true long oval fit DOT FMVSS 218 Certified