Costa Del Mar sunglasses bring premium performance optics to water enthusiasts worldwide for a reason with quality, style & innovation with Costa 580 lenses that deliver the ultimate Polarized lens experience. Whether your a fisherman, hitting the beach, lake or river Costa Del Mar has a style for you that boasts 100% protection, precise optical clarity, tons of style & premium Costa 580 polarization that obliterates the glare. Costa sunglasses from Action Sport Optics are authentic Costa products as ASO is a premium authorized dealer of only 100% authentic & original products.