Costa Tailfin Polarized Sunglasses in Matte Black/ Blue MirrorIntroducing Tailfin a modernized classic Costa design built for all waterman who require a clear view of their surroundings. Our Bio Resin frame boasts refined and chiseled edges, complemented by features that help you stay comfortable and sweat free, with your destination clearly in sight. Offering two size options, both those with bigger and smaller heads can embark on their watery adventures fully equipped. No matter where youre going, we built the