Fit Over Frames with Daytime LensesFITS OVER PRESCRIPTION GLASSES They fit over a wide variety of Rx and reading glasses. They can also be worn by themselves EASY TO USE Easily swap them back and forth between different glasses. No clips or fasteners REDUCE BLUE LIGHT Reduce your exposure to blue light from screens and LED lights by about 45% No more aching eyes! UVA & UVB Blocks 100% of ultraviolet light. BENEFITS Use while spending long hours in front of a computer screen. Helps blue