anti-fatigue, waterproof,high perspective, lightweight shatterproof, etc., for a long time online, reading, writing, reading the newspaper to prevent eye wear acid, eye swelling, tearing and other eye fatigue phenomenon, and clear vision, light feeling good, feeling comfortable eye. No ordinary reading glasses produced by shining white soreness and no discomfort, and upscale generous, beautiful. Is to send to friends, send their loved ones, send parents to send their elders the best gift !