These Red Rectangle Frame Readers are a fashion classic and an easy way to update your everyday style. 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: 53mm lens width, 15mm bridge, 140mm temple length. 50% polycarbonate, 50% acrylic. Imported.