The Giro Index OTG Snow Goggles are engineered specifically for people who wear glasses when they ride. The index features a finely crafted interior with extra volume to accommodate optic frames comfortably. Super Fit™ Engineering is the foundation of the product design process, with reference to Giro’s database of anatomic measurements and rider input and tested to create a final product that fits and performs at the highest level. Every giro goggle lens features anti-fog coating to keep your vision and riding experience on point. Vents cut into the lenses above the gasket line allow warm air to escape and keep your goggle from fogging. The Rose Silver 30 (30% VLT) lens is a rose-based tint that enhances depth perception combined with a single-layer silver flash that tunes light transmission for medium light conditions.