Costa's Tuna Alley sunglasses were named for the 15-mile stretch of sand that passes through azure Bahamian waters, famous for the Bluefin tuna's northern migration. These sunglasses were created with the angler in mind, using integral hinges, patented vent system and nylon that's as tough as you, all combined to give you visual performance that won't miss a thing. And as always, every pair of Costa sunglasses comes with a Costa Case, cleaning cloth, and manufacturer's Limited Lifetime Warranty.