Lens Material: Polarized Polycarbonate (580P). Costa 580P® Polarized Lens Technology. 580P lenses are the lightest and most durable in the Costa lineup. ✅ Costa Rincon II 580P Sunglasses. Costa’s signature580® lens system was designed by in-house light spectrum experts to outperform standard sunglass lenses by boosting clarity, enhancing natural color, and cutting glare.