Native Bigfork Polarized Sunglasses Castor Resin Imported N3 Polarized lenses feature infrared light reduction decreasing eye fatigue N3 lenses have been precisely engineered to filter blue light, minimizing haze so you get greater clarity, color and contrast and are built to withstand serious impact Co-injected Rhyno-Tuff Air frames now seemlessly incorporate our grippy, comfortable molding right into the plastic while Cushional nose pads and temple boots keep your shades in place during athletic activity Updated side vents are designed to keep the inside of your lenses fog free - all while fitting better than ever Optimal fit for large to extra large profiles Comes with extra SportFlex lenses, zippered hard case, microfiber soft case, and lens cleaning cloth