Metal frame Anti-reflective lens Non-polarized [Filter Bluelight Glasses] Blue light blocker with UV400 protection, help you resist 100% harmful blu-ray, reduce discomfort from TV, phone, digital screen and reading under fluorescent lights; Reduce glare, fatigue, headache, eye strain and dry eye, protect your vision and help sleep better [Polycarbonate HD Lens] Anti reflective, non-prescription clear lens; No color difference, restore the true color; Besides, you can remove the lens at any time and replace it with the prescription lens you want [Worry-free Service] We attach great importance to the quality of our products; Please feel free to contact us if there is any problem with the eye glasses, you have no risk to try