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 frmaes comfortably. Increased air volume inside the goggle keeps your vision crisp, clear, and fog-free. Triple Layer Face Foam Triple Layer face foam with microfleece facing. Seamless Compatibility For optimal performance of both helmets and goggles, Giro products are designed to work together, ensuring a seamless interface between helmet and goggle for an exceptional fit and dependable, worry-free function. Giro Buster Goggles + Grey Cobalt Lens Kids