Did you know that exposure to blue light from electronic devices can have negative health effects that cause permanent damage? Now you can avoid dry eyes, headaches, retina damage, trouble focusing and difficulty sleeping with the help of this officially licensed Minecraft Steve and Alex Kid's Blue Light Blocking Glasses Set. These green and black Minecraft Kid's Blue Light Blocking Glasses are made from polyurethane and feature a cool Minecraft Steve and Alex character design and offer 100% UV400 protection. Comes with cleaning towel and matching carrying case.