Features: 1. Blue light blocking lens: Provide 100 percent UV400 protection blue light blocking. This glasses can cut 99 percent of the blue light, effectively blocks ultraviolet radiation, protect your children's eyesight when they using a computer, tablet or smart phone. 2. Digital screen can emit bright blue light that cause eye strain even dizziness, using this blue light blocking glasses will reduce eye strain. 3. If your kids use computer or smartphone regularly or read a book, these glasses is your best choice for your kids 4. Anti harmful blue light, provide all-day protection, against the detrimental effect high energy visible blue light and UV400. Better sleeping for your kids, care for your eyes and guardian for your health. 5. Lens width:52mm, total width 125mm, nose bridge width 15mm, height 45cm, temple length 128mm, unisex style suitable for both boys and girls. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Specification: Type: Children's Anti Blue Light Glasses Material: PCandAC lens Size: lens width:52mm, total width 125mm, nose bridge width 15mm, height 45cm, temple length 128mm, as picture show includes: 1 x Anti Blue Light Glasses