Hanging Blue Light Blocking Screen Protector High transmittance Anti UV Eye Protection Film for 23 24'' Desktop Monitor gray.Hanging Blue Light Blocking Screen Protector High-transmittance Anti-UV Eye Protection Film for 23-24'' Desktop Monitor This Hanging Blue Light Blocking Screen Protector blocks blue light and UV to your eyes and restores the original colors. Besides, it is washable. Why do You Need it? If you suffer from dry eyes, eye fatigue, reducing melatonin, radiation, freckles, wrin