Features:- An enhanced version of one of Costa’s most trusted and well-loved frames, the Blackfin PRO builds off the original look, polarized lens and fit with six new angler-approved additions to keep you on the water longer. Along with a vented and fully-adjustable nose pad for a custom fit, sweat channels and eyewire drains will help keep your vision clear, while side shields, hooding, new stickier Hydrolite® and metal keeper slots keep your frames and your focus locked in.- 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.- Adjustable Nose Pad. Fully-adjustable, nonslip nose pads were designed to further customize your fit and help reduce fogging.- Scratch Resistant and Durable. The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning. - Blue Mirror.- Best for bright, full-sun situations on the open water and offshore.- Gray Base.- 10% light transmission.- Optimal usage.- Boating and fishing in deep water.- Open reflective water.- Harsh sun.- 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.