Costa's 580 lens technology blocks the yellow light at 580nm that causes eye fatigue and enhances reds, greens, and blues for unmatched visual acuity on the water. The 580G variant uses premium mineral glass for the clearest, most scratch-resistant optics Costa offers — ideal for anglers who demand the sharpest possible view of the water. Polarization eliminates reflected glare from water, roads, and other flat surfaces for safer, sharper vision. This pair features Blue Mirror tinted lenses, chosen to complement the frame and deliver the visual contrast the wearer notices first. Choose 580G for the scratch-resistant clarity of glass, or 580P for the lightweight resilience of polycarbonate. Both feature Costa's C-WALL hydrophobic coating that sheds water, oil, and salt.