The Vantage was built for the hard core, demanding the ultimate in everything. Using AEROCORE construction that features Koroyd simultaneously maximizes full coverage protection and increased airflow. For the most custom fit, the Vantage offers the Boa FS360 fit system, with a 360 halo design. Combine all this with the Smith pioneered AirEvac technology for goggle integration, and the Vantage delivers the perfect blend of technology and style. Hybrid SL shell construction . Aerocore construction featuring Koroyd . Adjustable Boa FS360 fit system . Low profile dual regulator adjustable climate control . 21 vents . Nanosilver performance lining . snapfit SL2 ear pads . removable ultra light goggle lock . Skullcandy audio systems available . Helmet Sizing: BOA FS360 Fit system, Small 51 55 CM, Medium 55 59 CM, Large 59 63 CM, X Large 63 67 CM . Certifications: ASTM F 2040, CE EN 1077:2007 Class B.