Read Optics - Designing & Manufactuing Ready to Wear Eyewear: We provide quality, ready to wear reading glasses at affordable prices, offering a wide range of non prescription eyewear. This includes clip on blue light glasses that offer protection against the harmful blue rays emitted from computers, i-pads, phones, TV & other digital devices. Our clip on sunglasses are polarized to filter out harmful UV rays, ideal for outdoor activities like fishing, sailing, skiing, driving and other outdoor activities. Our premium quality clip on's are solid and durable with a spring loaded flip up, flip down mechanism, that adjusts quickly and easily. If you want to understand more about the features of our clip on lenses, have a look at the handy images and videos, that demonstrate functionality and added protection.MEASUREMENTS. Lens width 60mm, lens height 44m, bridge width 13mm, frame width 133mm. Weight 9g. Conform to BS EN ISO 12312-1:2013 / EN ISO 12312-1:2013. PREMIUM QUALITY. Polycarbonate tinted lens that is smudge, scratch & impact resistant & filter out UV & bright sunlight. Optical quality lenses for long lasting wear. NON SCRATCH. Flip up, flip down spring loaded mechanism, easily adjusting for sun and shade. Secure fit with soft silicon pads to prevent damage to your glasses. BLOCK REFLECTIVE LIGHT. Blue mirror polarised lenses .Simple to fix to plastic, metal, rimless and half-frame styles, fits most frames. SIMPLE TO ATTACH SUNGLASS CLIP ON FOR GLASSES. Suitable for both prescription & non prescription glasses. Polarized UV protection, for sports, driving, fishing, outdoors & reading in the sun - these are the perfect sunglass accessory. See our positive customer reviews. The tinted lenses filter out UVA and UVB rays, so you can avoid the bright glare from the sun. Lens width: 60 millimeters. Polarized. Polycarbonate lens. Metal frame. Imported.