KleenGuard Nemesis Safety Glasses, Black Frame, Indoor/Outdoor Lens - Feature sleek, flexible, lightweight design with soft touch temples for comfort. Patented nose piece designed to be extremely flexible, to channel sweat away from the eyes, and to help prevent slippage down the nose—all for long-term comfort. Scratch-resistant dual polycarbonate lens offers 99% UVA/UVB/UVC protection.