Features: Filtering reflective glare is essential for anyone on the water or outdoors. Costa sells only polarized sunglasses. The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning. Your Costas absorb 100% of UV light, providing you the best in light management and protection. Costa 580 lenses were designed by in-house light spectrum experts to enhance colors because standard sunglasses fell short. The lenses multipatented technology manages light by: absorbing harmful high-energy blue light, (HEV), enhancing reds, greens and blues, & filtering out harsh yellow. Regular fitted-A large lens front designed to fit those with an average-sized head. Base Curve decentered-Frames with maximum-coverage and wrap that help reduce light leak.