Comfort Fit: Lightweight, adjustable nose pads & flexible temples for all-day comfort. Available Diopters: +1.0 / +1.5 / +2.0 / +2.5 / +3.0 /+3.5 Lens Material: Resin Lens Features: UV Protection, Photochromic Photochromic Technology: Lenses darken outdoors under sunlight (UV exposure) and return to clear indoors. Ideal for driving, reading, computer work, and outdoor activities. Package Includes:1PC Note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!