TAC HD POLARIZED LENS - 99% UV400 protection coating, blocks 99% harmful UVA & UVB Rays. Restore true color, eliminate reflected light and scattered light，make the scenery more clear and soft and protect eyes perfectly.Polycarbonate lens are impact, scratch resistant and unbreakable. STORYCOAST FRAME TECHNOLOGY- the frame is lightweight, very flexible, heat-resistant and UV-resistant. The sturdy and lightweight frame with non-slip nose pads and improves wearing comfort. Suitable for all face shapes, suitable for all kinds of outdoor sports. STORYCOAST LENS TECHNOLOGY- waterproof and hydrophobic coating technology can protect the mirror lens from water corrosion. It can block reflected glare and reduce eye fatigue. Color coatings can improve vision and contrast, and have high definition, impact resistance and scratch resistance. THE BEST CHOICE FOR OUTDOOR SPORTS- best for cycling, climbing, fishing, boating, sailing, water skiing, driving, running, hiking and traveling. Even if you wear it all day, you can hardly feel it. This is your reliable companion when you are outdoors. We insist on paying attention to product quality. If you have any quality problems or are not satisfied, we will seriously solve the problem for you until you.