ANTI BLUE LIGHT LENS: This computer glasses can effectively block ultraviolet radiation, provide UV400 protection and filter harmful blue light (wavelength is between 400nm-450nm). Low color difference, it is suitable for people who work long hours on computers, tablets, games, on the phone or on TV. REDUCE EYESTRAIN: As best indoor lenses for long hours of computer use, Konikit blue light blocking glasses can reduce symptoms of eyestrain during prolonged computer exposure. No worry about eye fatigue, blurred vision and headache. Go enjoy your digital time and a restful deeper sleep. plastic COMFORTABLE WEARING: TR90 material frame, which has the characteristics of super lightness, abrasion resistance, low friction coefficient and so on. It can effectively prevent the damage to the eyes and face caused by the fracture and friction of the eyeglasses frame in the movement, metal hinge is more stable. CLASSIC DESIGN: Fashion eyeglasses, it is suitable for both women and men, high transparency of frames, so elegant, never out of fashion. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.