Costa Blackfin Pro Sunglasses - Matte Midnight Color:Blue Mirror This material is used in

This material is used in high-end custom products to improve grip when wet

the longer a fly line will last before it cracks

Shooting Texture reduces friction

5% of sales goes to each: Alaska Backcountry Hunters & Anglers and Sportsman's Alliance for Alaska

Costa Blackfin Pro Sunglasses - Matte Midnight Color:Blue Mirror This material is used inCosta Blackfin Pro Sunglasses with Large Wide, Matte Midnight Blue Frame. The enhanced Blackfin PRO builds off the original look and fit with angler approved designs to keep you on the water longer. The vented and fully adjustable nose pad provides a custom fit. Sweat channels and eyewire drains will help keep your vision clear. And side shields, hooding, new stickier Hydrolite and metal keeper slots keep your frames and your focus locked in on fish.