Learn more about Costa Sunglasses Costas Loreto 580G Polarized Sunglasses are named for the sunny, laid-back town on the Sea of Cortez. These classic metal-frame sunglasses feature polarized lenses that block reflected glare, reduce eyestrain, and resist scratches and impact. Green Mirror lenses deliver superior contrast and color in full sun. Corrosion-resistant Monel frames are made of premium hybrid metal in classic aviator style. Integral hinges and medium fit. Block 100% of UV rays. Lenses repel oil and grime. Comes with a protective case. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Polarized.