The Costa Permit is an XL performance fishing sunglass built for maximum coverage on the water. The Matte Black frame features co-injected Hydrolite™ lining, flexible hinges and side vents to improve grip, comfort and airflow. The Blue Mirror 580G polarized glass lenses use a gray base with 10% light transmission, making them ideal for bright sun, offshore fishing, deep water and highly reflective open-water conditions. Costa's 580G glass provides excellent optical clarity, glare reduction and scratch resistance