Saltwater is splashing your face while you fight to haul a trophy marlin to the boat, but your Costa Blackfin 580P Mirrored Polarized Sunglasses aren't going anywhere, thanks to the Hydrolite non-slip lining. These fishing-optimized shades are ideal for angling on open water thanks to their large coverage and sporty wrap, as well as the glare-eliminating polarized lenses. Costa's 580 technology filters out harsh yellow light and UV blue light to make your view more crisp and clear while reducing eye fatigue so you can spot your prey in comfort.