Costa Fantail USA Sunglasses Composite frame plastic lens polarized Lens width: One Width millimeters Arm: 120.2 millimeters 3" high 4" wide 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