Inspired by the protected salt marshes composing half the terrain on its namesake island, the Catherine is a refined frame perfect for effortless elegance. Featuring soft cat-eye lenses and core-wire temple designs pulled straight from the waves, this 6-base, Bio-Acetate frame is a no-brainer for all your on-or-off-water adventures. Costa's 580 lenses are designed in-house by light spectrum experts to enhance colors thanks to multi-patented technology that absorbs harmful high-energy blue light (HEV), enhances reds, blues, and greens, and filters out harsh yellow. The 580 lenses are also scratch resistant, and and 20% thinner and 22% lighter than other polarized lenses on the market. Features: Bio-Acetate frame580 lenses: Scratch resistant and enhances clarity20% thinner and 22% lighter than other polarized lenses on the market Costa Catherine Evening Shallows Frame Sunglasses w/Gray 580G Lenses 06S2012-20120457