The Blackfin by Costa are serious shades for serious fishermen. The co-injected frames won't slip no matter how much sea spray or sweat is dripping from your face. With superior comfort and UV protection, not to mention the glare reduction, it's amazing you haven't caught a fish by the time you finish reading this description.
580G - The clearest in the industry, blocks yellow light, patented technology
400G - LightWAVE glass, amazing clarity and durability, 20% thinner and 22% lighter
580P - Best plastic lenses available, repels water and oils, blocks yellow light