Costa Isabela Polarized580 Sunglasses - She's one of the largest and most intriguing islands in the Galapagos archipelago, and now Isabela brings size and style in a lightweight package. Nylon composite frames wrap either Costa's 580P lenses, meaning you'll see the sun, sand and surf in style. Costa's 580P lenses are the best plastic lenses available. They repel water and oils while blocking yellow light for better viewing around water. PolarizedHinge Type: SpringLens Size: 64mm/39mmTemple Length: 124mmBridge/DBL: 18mm/17mmBase Curve: 8 baseFrame Material: NylonSize: LargeRX-ABLE