Prescription eyeglass compatible Anti-Fog Coating Every Giro goggle lens features our anti-fog coating to keep your vision and riding experience on point. Double Layer Face Foam With Microfleece Facing Double Face Foam is a two part system that gives you a plush contact layer against your face and a durable back layer that adheres to the goggle frame. OTG Friendly Engineered specifically for bespectacled skiers and snowboarders, goggles that are OTG (Over-The-Glass) feature a finely crafted interior with extra volume to comfortably accommodate prescription frames. Increased air volume inside the goggle keeps your vision crisp, clear, and fog-free. Seamless Compatibility Seamless compatibility with all Giro helmets