Costa Del Mar's 580G Crystal Glass Lenses represent the pinnacle of optical performance, handcrafted for unmatched clarity and true-color vision. The 580G designation means the lens blocks High Energy Visible (HEV) light at 580 nanometers — the spectrum most responsible for glare and eye fatigue — dramatically sharpening contrast and color on the water and beyond. Polarized with full UV400 protection, these scratch-resistant glass lenses are the gold standard for anglers and outdoor enthusiasts who refuse to compromise on their vision.