Costa Del Mar Fantail Sunglasses, Blackout / Blue Mirror 580 Glass LensThese co-molded frames are a bit smaller, but definitely akin to the classic styling of our Blackfin frames. Adventure-ready? You betFEATURES:pComfortable medium fit.brIntegral hinge.brHeavy-duty TR 90 nylon frames.brIncludes hard case.br100% UV light blockage for max protection.br100% polarization kills reflected glare and reduces eye strain.brBuilt by hand and backed for life. Every pair of Costa Sunglasses includes a limited lifetime warranty.brPlastic lenses are lightweight, impact- and scratch-resistant.brGlass lenses have the greatest clarity and are scratch resistant.brThis style is prescription ready, click here to learn more about Costa prescriptionsSPECIFICATIONS:pBase curve of 8.brDBL: 16mm.brTemple Length: 120.2mm.brLens size A/B: 59.3mm/38.2mm.