Costa Diego Sport Performance Sunglasses with XL Wide, Matte Black Frame Diego sport performance sunglasses feature coloring enhancing polarized 580 lenses that provide 100% UV protection, an innovative vented spring hinge system to maximize airflow and enhance fit, plus sweat management channels that wick away moisture to cool and ensure all day comfort. Diego includes flexible, strap ready temple tips, and top and side shield details to eliminate light leak. Diego is the next evolution in performance sunglasses. The name was inspired by San Diego, a favorite place to embark when chasing Yellowtail or the mighty Bluefin! Everything looks better and clearer with Costa Sunglasses in 580G! Costa polarized glass provides superior clarity and thanks to encapsulated mirrors between the layers of glass, they are scratch-proof too. The material is 20% thinner and 22% lighter than average polarized glass. Don't settle for any less when you need to scan for fish rising or just want to enjoy a beautiful day on the water without glare.