Maximize your field of vision with open-edge lenses made of optically pure PLUTONITE®. The rimless architecture minimizes weight with durable C-5™ alloy, a proprietary blend of five metal compounds. Sleek linear earstems are augmented with UNOBTAINIUM® to maintain a secure, comfortable fit. HIGH DEFINITION OPTICS® (HDO®) maintain clarity at all angles of vision while optional IRIDIUM® lens coatings cut glare and boost contrast.