A 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 won't have to worry about breaking them, all while enjoying the lightweight comfort that comes standard with the Defiance. The nosepiece features non-slip thermoplastic rubber (TPR) details. And the lenses block 99.9% of UVA, UVB and UVC rays, even the clear options. From the river to the jobsite, the Defiance delivers impact protection, comfort and glare-reducing features.