*BLUE LIGHT BLOCKING LENS -- These non-prescription glasses protect your children's developing eyes from the harmful blue light that computers, tablets, mobile devices and game consoles transmit, reduce headaches, dry eyes, eye fatigue and myopia risk. The glasses are suitable for 5 to 12 years old boys/ girls/ teens/ children. *SUPER CLEAR VISION -- No harsh yellow/ orange colored lenses to distort your child's vision. Blue light blocking lenses can also help reduce glare, improve contrast, provide better color perception, and relieve digital eye strain. The updated lens is much transparent and clear and can be replaced with your kid’s lens at the eyewear store. *LIGHTWEIGHT & ANTI-SLIP -- We use skin friendly TR material and lightweight builds to keep your children comfy and happy. No need for a strap with the free plastic temple tips for the ears, the glasses don't fall off when your child put their head down. *GLASSES DIMENSIONS -- Lens Width: 47 mm (1.9 in), Lens Height: 38 mm (1.5 in), Frame Width: 126 mm (5 in), Nose Bridge: 15 mm (0.5 in), Arm Length: 125 mm (4.9 in). Microfiber Pouch and Cleaning Cloth are Included. *90 DAYS MONEY BACK & LIFETIME WARRANTY -- We ensure all of the customers 90 Days Money Back Guarantee and Lifetime Warranty for our products. In case of any broken issues, please contact us without hesitation. We will provide the best service. You have no risk to try!