ALWAYSUV Blue Light Filter Computer Glasses for Blocking UV Blue Ray Minimize Headache Anti Digital Eye Fatigue Transparent Lens Blue Frame

Features Material: Plastic Lens: This glasses transparent lens Frame: A stylish, compact and lightweight retro classic full frame design Color:Black, Blue, Green, Purple, Blue Pink Package include: 1 x glass Blue light blocking If you are unfamiliar with blue light it's right next to UV light on the spectrum of light. It is comprised of very high energy and a low wavelength very similarly to UV light. All of our electronic devices with a back-lit screen give off large quantities of blue light (Iphones, Ipod, Laptop, Computer TV.) This blue light messes with our internal clock making us think it's mid day when really it can be closer to night and stops our body from naturally producing the melanin that helps us fall asleep late at night. Measurements Lens width: 46mm Lens height: 37mm Nose Bridge: 15mm Arm?133mm Cleaning: 1. The glasses should be treated carefully to avoid damage and should be cleaned regularly 2. Clean the lens using soap water or neutral detergent, gently wipe dry with the soft glasses cloth