Penetrating Glasses -- Protect your eyes from the harmful effects of winter and summer. Prolonged exposure to bright light can cause a variety of eye problems. Improve Clarity and Contrast -- Color changing design improves clarity and contrast, making it easier to see objects in bright sunlight or low light conditions. Glare Reduction -- It can reduce light caused by reflections from smooth surfaces such as water, snow and glass. This makes them ideal for outdoor activities such as fishing, boating, and skiing. Protect Your Eyes -- For people who often do outdoor activities, especially in sunny environments. They provide protection, comfort and improved vision, making them a must-have accessory for anyone who values eye health and safety. Reduce Eye Fatigue -- Reduce eye fatigue while preventing foreign objects from flying into the eyes, allowing you to wear glasses for a long time without discomfort. Temple Length: 149 mmLens Technology: Anti-Reflective PolarizedLens Colour: Black and PhotochromaticPackage including 1*glasses"