The Thick Square Readers are a smart look. This design features a thick black square frames with a metal detail. Since they're perfect for anytime of year, 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: 52mm lens width, 20mm bridge, 150mm temple length. 38% Polycarbonate, 30% Cellulose Propionate, 30% Acrylic, 3% Copper. Imported.