Costa Loreto Sunglasses Made in USA Metal frame Plastic lens polarized 100% UV protection coating Lens width: 53.3 millimeters Lens height: 46.6 millimeters Bridge: 21.3 millimeters Arm: 116 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