Perfect for an afternoon spent beachcombing or voyaging out on the water, Cost´s Ballast sunglasses are ready for whatever the day brings. Frameless and almost weightless, these Polarized Costa men´s sunglasses boast a durable TR90 nylon and weigh in at a lightweight 16 grams. Whatever watersport or waterside adventure a day on the water brings, Cost´s Ballast are always looking to uncover something new. Copper Silver Mirror: - Well-suited for stream fishing and other environments with varying light. Copper Base: - 12% light transmission Optimal usage: - Excellent for sight fishing - Everyday activities - Most versatile - Cloudy days Costa 580® lenses: - Costa 580® lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short. The lens´ multipatented technology manages light by: - Absorbing Harmful High-Energy Blue Light (HEV) - Enhancing Reds, Greens, and Blues - Filtering Out Harsh Yellow 580® lightwave Polycarbonate: - C-Wall® Molecular Bond - Mirror (Optional) - Polycarbonate Lens - Polarized Film - Polycarbonate Lens - C-Wall® Molecular Bond Lightweight, Impact-Resistant: - Polycarbonate & the lightest, most durable lens material option - C-WALL® is a molecular bond which is scratch-resistant Premium Polarized 580 Lenses: - Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses. 100% UV Protection: - Your Costas absorb 100% of UV light, providing you the best in light management and protection. Scratch Resistant and Durable: - The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning. Specifications: - Lens curve: Base 8 Decentered - Lens Category: 3P - Frame color: Matte Black - Lens color: Gold Mirror - Lens material: Polarized Polycarbonate (580P) - Frame fit: Narrow In the box: - Ballast - Costa Case - Cleaning Cloth