Vega Altura Red Stryker Graphic Medium Full Face Snowmobile Helmet Meets or exceeds DOT standard High-tech specialty thermoplastic shell (XS-XXL)and a fiberglass shell (XXXL-XXXXXL) and a removable, washable, snap-in/snap out liner Easy-Com liner system for headset speakers Extra large capacity top forehead vents for maximum airflow and reduction of heat and moisture Two stage adjustable center chin vent to reduce fogging and add comfort