Anti-Fog Coating Every giro goggle lens features our anti-fog coating to keep your vision and riding experience on point. 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 google, and then shaved down the frame rim and added frameless zones to optimize a massive spherical lens focused on the best posssible peripheral vision on a goggle. 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 accomodate prescription frames comfortably. Increased air volume inside the goggle keeps your vision crisp, clear, and fog-free. 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. Triple Layer Face Foam Triple Layer face foam with microfleece facing. Toric VIVID Lens with Optics by ZEISS Toric Spherical in shape, this lens mimics the form of the human eye to provide superior optics while creating increased air volume inside the goggle to help prevent fogging. The manufacturing, testing, and quality control of all Giro spherical lenses is provided by ZEISS Optical, the global leader in optical technology and photography. Giro Millie + Vivid Royal Goggles Womens