Costa Ballast 580P Polarized Sunglasses Tortoise/brown. Rimless sunglasses are extremely lightweight and provide an unobstructed view of your world...by land or by sea.Weighing in at a mere 16 grams (about half an ounce), Costa's Ballast Polarized Sunglasses are almost weightless, yet provide all-day protection from harmful UV light whether you're on the water or taking it easy on the beach. Their lightweight TR-90 nylon frames are made with resin from the castor plant. This bio-based resin offers a 70% reduction in emissions over petroleum-based resin, helping to reduce the overall carbon footprint. The 100% polarized, scratch-resistant 580P polycarbonate lenses eliminate reflective glare and reduce eye strain. Hydrolite nose and temple pads are up to the task of stopping annoying slippage and securing your shades to your face.580P Polycarbonate LensesPolarized to eliminate reflective glare and reduce eye strainLightweight, yet durableImpact resistantC-Wall scratch-resistant, smudge-free barrier100% protection from UV lightAbsorbs harmful high-energy blue light (HEV)Cuts haze and blur for greater clarityFilters out harsh yellow lightEnhances reds, greens and bluesSharp contrast with high definitionRimless TR-90 Nylon FramesCastor oil is used to make the bio-based plastic resinBio-based resin offers a 70% reduction in emissions over petroleum-based resinReduced overall carbon footprintFlexible, yet tough and durableLightweight, rimless styleResistant to heat and coldHydrolite hypoallergenic rubber nose and temple pads prevent slippingCorrosion-resistant, stainless steel hinges keep their shapeKey FeaturesMedium fit580P polycarbonate polarized lensesRimless TR-90 nylon framesIncludes hard case and cleaning clothPrescription readyLimited lifetime warranty
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