Costa Del Mar Corbina Tortoise Sunglasses Metal frame Glass lens Polarized Lens width: 60.5 millimeters Bridge: 19.5 millimeters Arm: 125 millimeters Glass provides the best clarity in material Encapsulated mirrors (between layers of glass) are scratch-proof 20% thinner and 22% lighter than average Polarized glass 100% UV blockage for maximum protection 100% polarization kills reflected glare