Costa Del Mar Cat Cay AT Tortoise Sunglasses Acetate frame Glass lens Polarized Lens width: 60 millimeters Bridge: 12 millimeters Arm: 120 millimeters 2" high 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