Costa Corbina Pro Polarized Sunglasses - A legacy favorite and sport staple among bass anglers, we added Corbina to the Costa PRO Series.Enhanced with our latest frame technology, the Corbina PRO uses polarized 580G color-enhancing lenses for superior clarity and scratch resistance, stronger and improved Hydrolite grips, and fully adjustable nose pads for a secure and finely tuned fit with minimal light intrusion.The Corbina PRO is the rugged frame you know, improved with six key PRO Series features and more bend over the ears to keep your cap low while scanning the water for where the 10-pounders hide. Costa 580 lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short. The lens' multipatented technology manages light by: Absorbing Harmful High-Energy Blue Light (HEV) Enhancing Reds, Greens, and Blues Filtering Out Harsh Yellow