SNAPSHOT MAGNETIC LENS SYSTEM - Utilizes self-locating rare earth magnets and a secure locking mechanism for fast, on-the-fly virtually effortless lens interchange. Upon contact with the frame, the lens simply snaps into place and then locks down securely. When the clouds roll in simply depress the shutter button, release the lens and insert the lens of your choice. VIVID LENS TECHNOLOGY with Optics by ZEISS - VIVID is a patented lens technology developed by Giro in partnership with Zeiss. VIVID improves the visual experience on snow by enhancing contrast and definition. VIVID Lens Technology effectively manipulates blue light by letting in contrast enhancing blue light, while blocking harmful UV light. Vivid essentially filters out the haze and frees your eyes to sport your line and focus on enjoying your riding/skiing experience.