Ztec eyewear features single-lens construction providing durability and a panoramic view _ and these glasses are super-tough! Soft, non-slip rubber temple grips give you a solid fit, even when working hard. Lenses are coated for superior scratchresistance and provide 99% protection against harmful UV rays. Lens options include Clear (C), Grey (G), Indoor/Outdoor Mirror (IO). Meets ANSI Z87.1 requirements.