Sleek, hardworking Costa Saltbreak 580G Polarized Sunglasses are a great choice for fishing and outdoor activities. Tough TR 90 nylon frames with integral hinges curve to your face for a fit so comfortable, youre likely to wear them until the sun goes down. The glass lenses provide 100% polarization and UV protection and boast True Costa 580 Technology, which blocks yellow light to enhance color, boosts red and green light, and increases polarizing efficiency. They also eliminate haze and blur by blocking blue light. The blue mirror sunglasses deliver super contrast and color in full sun and eliminate glare (gray base) while the green mirror sunglasses enhance visual acuity and eliminate glare (copper and amber base). LightWAVE glass construction makes the lenses a bit heavier than the polycarbonate version, but in return you get even clearer lenses and incredible scratch resistance. Youll see fish and objects in and on the water with amazing clarity. Handcrafted for those who spend extended time fishing or boating, Costa Saltbreak Polarized Sunglasses resist impact, scratching, saltwater and grime. Backed by Costas lifetime warranty. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Polarized.