1. Elegant Design - Cateye composite frame with clear glass texture, exquisite and sturdy. 2. Light and shiny metal frame material, elitism and vogue. 3. Blue light blocking lenses protect the health of the eyes. Say goodbye to glasses and headaches 4. Design with large metal hinges and one-piece nose pads that ensure maximum comfort. 5. Zenni Prevent Harmful Blue Light Lenses: Blue light glasses can effectively block harmful blue light and ultraviolet light. Whether it's a computer, laptop or smartphone, these glasses always help prevent blue light. So you can enjoy your digital time. This kind of glasses can protect eyes from computer vision syndrome (eye loss focus, unclear vision, fatigue, heartburn, etc.)