The Neutral Colorblock Readers are a smart look. This square design features a black and neutral colorblock. Since they go with just about anything, 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, 20mm bridge, 135mm temple length. 50% polycarbonate, 50% acrylic. Imported.