SPECS: Perfect for skiing, snowboarding and other snow sports Mid-sized frame for a comfortable, medium-fit Anti-fog treatment for a crystal-clear vision Seamless compatibility with all Giro googles to ensure an exceptional fit and worry-free, dependable function Includes yellow bonus lens for low light conditions Use spec chart to determine VLT (Visible Light Transmission) range and recommended conditions for main and bonus lens colors DESIGN & TECHNOLOGY: Expansion View (EXV) Technology brings an unrivaled field of view Double layer face foam with microfleece facing for optimum support and comfort OTG (Over-The-Glasses) friendly with extra volume to accommodate prescription frames comfortably Provides interjection-molded cylindrical lenses with Optics by ZEISS(R) Interjection-molded cylindrical lens helps to minimize distortion and refine optics