Gateway Safety metro's comfortable, lightweight fit and popular, modern Style make it look and feel less like Safety eyewear and more like everyday Glasses. Weighing well under an ounce, Metro provides Ultimate comfort for long-term wear and better compliance. Additional sought-after comfort features include a Soft, cushiony nosepiece and contoured temple tips. Metro's lightweight fit and sleek Style add up to unsurpassed eye protection for a variety of environments and activities. Gateway Safety and an independent third party Laboratory regularly Test and certify that this product meets or exceeds the ANSI Z87.1+ standard. Gateway Safety regularly tests and certifies that this product blocks 99.9 percent of UV-A, uv-b and uv-c radiation up to 380nm. These lenses reflect some bright light while allowing a moderate amount of light through the lens.