UV Protection: Ultralight and highly scratch-resistant material lens with UV400 technology provides maximum protection against harmful UV rays. Function: Polarizing layer lenses can effectively filter out excess light, weaken strong light, soften dazzling light, provide a good anti-glare effect, make the field of vision more concentrated, and keep the eyes always comfortable. Easy to Use: Durable and flexible spring-loaded clips are not easy to break, the pop/flip design allows the lens to be flipped up. Built to Last: Constructed from precision-engineered spring bridge, ensuring smooth, solid, and durable flip up that won't break or get stuck. Suitable Occasion: Suitable for sports or everyday life in all seasons. Perfect for holidays, reading on the beach, and other outdoor activities such as summer fishing, sailing, winter skiing, motorcycling, cycling, running, racing, and climbing, hiking, etc. Products from