ALWAYSUV 3 Pack Blue Light Computer Reading/Gaming Blocking Glasses Transparent Lens Eyewear For Kids, Set2, Medium.

, Features Material: Plastic Lens: Transparent lens Frame: A stylish, compact and lightweight retro classic full frame design Type: 3 pack blue light blocking glasses Package include: 3 x glasses Blue light blocking If you are unfamiliar with blue light its 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 backlit screen give off large quantities of blue light (Iphones, Ipod, Laptop, Computer TV. This blue light messes with our internal clock making us think its 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. , Specification: Lens width: 47mm Lens Height: 36mm Frame Width: 130mm Arm Length: 135mm 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.