HD Polarized Lens: Polarized lens can reduce glare, offer you a HD vision for driving, fishing, hiking and cycling. UV Protection & Light Weight: UV400 protection coating can block all harmful UV radiation, protect your eyes from glare. Only 5g weight offers you a comfortable feeling. Impact Resistant & Scratch Proof: TAC lens are quite flexible and have high impact resistance. Rubber protective layer on clip can avoid any scratch on your prescription glasses. Comfortable Clip Design: Different from traditional big clips: heavy and thick beams, our small clip is almost invisible when you wear it on your glasses, but easy to clip on and flip up. Fit Most Frames: Lens size is 64*47mm(2.52*1.85in), can be widely used with most of your prescription glasses. No matter metal or plastic frame, full frame and rimless frame. ARCAMOY specializes in the development and offer high quality/technology of clip on sunglasses. Our goal is : To give you perfect products and explore the beautiful scenery. Product Features : 1. Clip-on Sunglasses : Clip-on and flip up design for sport and outdoor activities lovers. You can easily fit it over your prescription eyeglasses, our invisible clip design looks more natural and relaxing. 2. TAC Polarized lens : High impact resistant, more flexible and durable. Anti-glare lens can eliminate reflected and scattered glares, offer you a comfortable and HD vision. 3. UV 400 Protection : 99.8% block UVA and UVB harmful UV rays, to protect your eyes always. 4. A nice leather case is available for each clip on sunglasses, portable for your use and storage.