Main Feature Wearing our glasses, it provides you full protection indoors and outdoors. ANTI BLUE RAY RADIATION; it filters most of the blue ray radiation, keep your eyes health. ANTI EYE FATIGUE; our lenses can relieve our eye fatigue especially when watching TV and working in front of the computer. ANTI UV400; with UV 400 lens, it blocks 100% harmful UVA & UVB rays from sunlight. PHOTOCHROMIC LENS; the lens will change color automatically when exposed to sunlight. It is a MUST-HAVE for people those are using digital devices for long time(office workers and students, etc.)