Defiance - Polarized Blue Mirror Blk FrameA bold design, smart details and advanced lens technologies add up to make the Edge Defiance a serious contender for your new favorite pair of Z87+ safety glasses. Optional polarized lenses, available anti fog technology (called Vapor Shield) and an anti scratch coating provide unflinching optics to keep vision clear in virtually any environment. And with flexible, yet durable, frames you wont have to worry about breaking them, all while enjoying the