FEIVSN Set of 4 Lightweight Metal Spring Hinge Oval Glasses for Reading for Women Product Detail Frame: Metal Frame Lenses: transparent Resin Color: blue, red, black,grey,4 mix colors Diopter available: +1.0, +1.25, +1.5, +1.75, +2.0, +2.25, +2.5, +2.75, +3.0, +3.5, +4.0 Blue light blocking glasses: Anti eye fatigue: Reduce eye strain and sensitivity to light when facing digital screens. Great for office workers or anyone who has to look at screen all day. Minimize headache: Blue light blocking glasses will supercharge your health by blocking detrimental blue light while letting in all other beneficial light. Sleep better: Exposure to high rate blue light will impact our sense of circadian rhythms cause insomnia. Wearing blue light filter glasses will improve your sleep, help you sleep better and have good night. CLASSY & CONVENIENTl Stylish oval rectangle design, high quality material & spring hinge, perfect for both men and women, convenient for long time wear without eye strain when reading or working. 4 pack with felt bagl You can get 4 pairs of reading glasses one time, keep a pair at home, work place or anywhere else you may need them in a pinch, avoid spending times on finding glasses. Package Contain 4 * reading glasses 4 * glasses bag 1 * clean cloth TIPS FOR CLEANING Use a gentle lens solution. To avoid scratches. Never wipe the lens when they're dry (there may be dust or particles). Use Soft materials such as cleaning cloths, Don't use paper towels or other rough materials.