Long-lasting and stylish with a sleek lookUses Condensed Cranial Geometry to fit people with skinnier headsThree-Point Fit keeps glasses in perfect optical alignmentO Matter frame is lightweight and durableFrame color: Matte blackLens color: GreyFit: StandardLight Transmission: 16%Light Conditions: Bright lightContrast: NeutralManufacturer warranty: 1-year warranty