Anti-blue ray computer glasses, which can minimize the eyestrain caused by harmful blue ray emitted from digital screens. Resin lens super lightweight can cut 90% harmful blue light. Complimentary cleaning cloth. PREVENT HARMFUL BLUE RAY: These anti blue ray glasses can effectively obstruct injurious blue ray, electromagnetic wave radiation, and ultraviolet rays. No matter it?s computers, laptops or smart phones, the glasses can always help to prevent harmful blue ray the screens emitted, protecting eyes from invisible injurious blue ray. So that the glasses can protect the eyes from computer visual syndrome (eyes losing focus, vision getting unclear, fatigue, ophthalmic acid, bulging, et). REDUCE EYESTRAIN VISUAL SYNDROME: By preventing the injurious blue ray, these glasses can protect the eyes from computer visual syndrome (eyes losing focus, vision getting unclear, fatigue, ophthalmic acid, bulging, headache, etc.). so you don?t need to worry about hurting your eyes (getting myopia or vision getting declined, or other visual syndrome), just enjoy your digital time. COMFORTABLE WEAR: The frame wears very comfortable, and the lenses? light transmittance is very good. Furthermore, casual frame design keeps you looks professional and fashionable while working or reading.