BLUE LIGHT FILTER LENS - Block harsh blue light and UV400,Blue light blocking computer glasses is Professional for people who work long hours on computers, tablets, games, on the phone or on TV ANTI EYE STRAIN, MORE RESTFUL SLEEP - Enjoy your digital time, NO worry about eye fatigue, blurred vision and headache., Improve Better Sleep, provide all-day protection TRANSPARENT LENS - Low color difference,bring you good visual experience,shock resistant ,non fragile and water proof, dust free and easy to clean,safe to wear FASHION DESIGN & HIGH QUALITY MATERIALS - Ultra light frame,never out of fashion,strong and durable,the non prescription glasses is suitable for women and men OUR SERVICE: We stick to pay attention to product quality, if there are any quality problems please feel free to contact us!