Excellent aerodynamics and aeroacoustics. High-class Interior that transports humidity consists of Hydropolus^TM with. The helmet fits your head perfectly otherwise you can regulate the size. The airing is one of the best on the market. - helmet shell of GFK, two sizes - licensed after ECE 22-05 - vizor: curved three dimensional   opt. class 2, anit scratch - simple vizor change - head airing controllable by slider - vizor airing  by central wipp button - interior consists of humidity transporting   Hydropolus^TM, completely removeable and   washable - chinbelt with ratched prick lock - prepared for communication facilities - Neckbelts - Interior with modular construction: - with chin spoiler and neck belt extremely quiet,   without chin spoiler and neck belt very airy. Also   useable just with neck belt or just with chin spoiler - anti fog-inner pane and chin spoiler are standard - multi segmented EPS- inner shell - sizes : 52/53-62/63 - weight ca. 1380 g