Named after the legendary 15-mile stretch of sand cutting through the deep blue Bahamian waters where the Bluefin tuna migrate north, these Costa Angler sunglasses are created to uncover and showcase the famous, underwater fish highway. With integral hinges, a patented vent system, 100% polarized and made from tough-as-nails nylon, these Men's Angler performance fishing sunglasses won't be missing much. plastic/acetate frames integral hinges a patented vent system polarized glass lenses prescription compatible flash mirror lens treatment Imported.