Item Type: Clip On Glasses Material: PC, UV Anti Blue Lights Range: 400-500nm Flip: 180 Package List 1 x Clip On Glasses 1 x Cleaning Cloth 1 x Storage Box 1Efficient Blocking: Through a variety of different UV materials and multi layer coating technology, the lens can block more than 99% of harmful blue lights between 40Onm500nm. 2Eye Protection: Use absorption and reflection methods to block blue lights on the front and rear of the lens, comprehensively protect the eyes from blue lights damage. 3PC Nose Clip: The nose clip is made of premium PC material, which is comfortable to wear, and the edge of the lens is polished with a frosted process, avoid the risk of scratching. 4180 Vertical Flip: The glasses clip can be flipped vertically 180, which can be flipped up directly when not in use, more convenient to use. 5Easy to Wear: Just one buckle to clip on the nose bridge of your glasses, and is easy to take off, very lightweight, you will wear without feeling.