【FILTER BLUELIGHT GLASSES】-Clear glasses with UV400 protection can anti 100% harmful blue ray from computer PC, TV, phone & ipad, tablet, video; reduce headache, migraine, eye strain(fatigue), eye dry and glare.
【HELP YOU SLEEP BETTER&REPLACEABLE LENS】-Blue blockers help you sleep faster and longer, the blue ray blocker can help you produce Melatonin (sleep hormone) faster, making you sleep better naturally- without any pills. The original lenses can be replaced with your prescription lens at any time.
【COMFORTABLE WEARING】-Durable, flexible and lightweight, square nerd TR90 frame suitable for all faces. You can wear our glasses for long-term with no pressure feeling in front of digital screens or your trip out of town.