Product Description Ski goggles with Cat 3 lens for bright light designed for use with prescription glasses These superior goggles with double-vented lens feature an engineered foam opening system for optical eyewear compatibility (OTG) - perfect if you wear prescription glasses. The Cat 3 purple/mirror silver lens provides excellent definition in bright light. Lech OTG Goggles offer maximum UV protection and have an anti-fog coating for performance in poor weather conditions. Helmet compatible and optimised for medium-to-large faces. Features Cat 3 lens provides superior definition in bright light Engineered foam opening system for optical eyewear compatibility (OTG) Double vented lens Fits over prescription glasses Tri-layer moisture wicking insulated fleece Anti-fog coating Maximum UV protection Helmet compatible and optimised for medium to large faces