EXPANSION VIEW (EXV) TECHNOLOGY - Perfected at Giro's test lab in Scotts Valley, California, this groundbreaking new frame design serves up unparalleled peripheral vision. We started with a helmet-compatible goggle, and then shaved down the frame rim and added frameless zones to optimize a massive spherical lens focused on the best possible peripheral vision in a goggle. INJECTION-MOLDED CYLINDRICAL LENSES - Injection-molding a cylindrical lens helps refine optics and minimize distortion that can occur in thermo-formed cylindrical lenses. OTG FRIENDLY - Engineered specifically for bespectacled skiers and snowboarders, goggles that are OTG (Over-The-Glasses) feature a finely crafted interior with extra volume to accommodate prescription frames comfortably. Increased air volume inside the goggle keeps your vision crisp, clear, and fog-free. ADDITIONAL FEATURES - Anti-Fog Coating, Triple layer face foam with microfleece facing, Seamless compatibility with Giro Ski and Snowboard Helmets. INCLUDES - Giro Sagen Ski Goggles with Dark Shark Thirds Strap, Grey Cobalt Lens (15% VLT - Full Sun), and Yellow Lens (84% VLT - Night/Race) Fully Loaded with Features