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Polycarbonate Costa 580 lensesSuper-lightweightCustom Megol® nosepads and temple tips100% UV protectionPerfect for sport fishing, relaxing at the beach or cruising around town, the Costa Ballast 580 Polarized Sunglasses are at home everywhere you roam. The super-lightweight, rimless Ballast Sunglasses design is as durable as it is comfortable with custom Megol nosepads and temple tips. The polycarbonate Costa 580 lenses are designed to maximize visual acuity by delivering 100% polarization and 100% UV protection along with heightened clarity, contrast, and unbeatable definition. Manufacturer's lifetime warranty.About your Costa lenses:Gray is ideal for medium to bright sun conditions; a good pick for water or land sports.Amber is an excellent all-around lens that is great for everyday activities where high contrast is needed.Blue Mirror provides excellent color and contrast in bright sun, while eliminating glare; ideal for most water sports.