The Matte Black Readers are a smart look. This design features matte black frames and arms with silver tone details. Since they liven up just about any look, make these glasses your go-to for everyday wear. Complimentary canvas case included. Blue light filtering specs filter up to 40% of blue light emitted from digital devices, artificial fluorescent and LED light exposure. Flex hinges for long wearing comfort fits a variety of head sizes. Anti-reflective coating. Distortion free lens for better acuity. Optical fit: 50mm lens width, 10mm bridge, 140mm temple length. 50% polycarbonate, 50% acrylic. Imported.