Design: Premium Polarized 580 Lenses- Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses. The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning. Vented nose pads increase ventilation across the frame, reducing the risk of fogging New micro side shields and hooding provide a heightened level of coverage, minimal light leak and protection from the elements Technology: The lens' multipatented technologymanages light by: Absorbing Harmful High-Energy Blue Light (HEV): Enhancing Reds, Greens, and Blues: Filtering Out Harsh Yellow Costas absorb 100% of UV light, providing you the best in light management and protection Additional Details: