Choose the Oakley E-Frame Dual Lens Goggles for fog reduction and enhanced durability. They feature F-2 Series anti-fog treatment, lens venting to alleviate moisture, and optically pure Lexan? lenses to keep you focused as you float in powdered bliss.Dual lens for added durability and fog reduction. Urethane frame construction maintains flexibility even in extreme cold. Wide, adjustable, elastic strap for comfortable and secure fit. Reduced glare via textured interior surface. Single-layer face foam forms a comfortable seal. Fog reduction of vented dual lens with F-2 Series anti-fog treatment. Lexan? lens material for scratch resistance and optical clarity. Lens venting reduces interior moisture.