The Americana Square Readers are a smart look. This design features a red frames with clear and blue arms. Since they're perfect for this time of year, make these glasses your go-to for backyard BBQs. 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, 12mm bridge, 135mm temple length. 50% Acrylic, 50% Polycarbonate. Imported.