Costa Del Mar King Tide 6 SunglassesDesigned for elite anglers that demand the most from their gear, the Costa Del Mar King Tide 6 Sunglassesutilize research and innovation from Costas 40 years on the water building the best sunglasses for anglers. Starting with the frames, the King Tide 6 Sunglasses feature removable side shields that block light while on the water then transition seamlessly to a lifestyle frame on land. They also feature shark gill inspired side venting and adjustable