Inspired by the laid-back beaches of Tybee Island in Georgia, Costa Del Mar Tybee 580G Polarized Sunglasses are made for taking it all in, in style. Tybee sunglasses feature a casual style that lives up to the watery world that inspired them while embodying the classic town they're named for. Polarized to fight glare, these Costa sunglasses boast 580G LightWAVE glass lensesthe clearest in the industry. They are also scratch-resistant and thinner and lighter than average polarized glass. 580 technology goes beyond polarization to produce the best lenses on the planet by selectively filtering out harsh yellow and harmful blue light, making colors brighter and objects appear more defined. Select styles also feature mirror lenses for added glare control. A gradient tint is also employed on select styles to reduce eyestrain and is characterized by lenses transitioning smoothly from a solid color to a transparent shade of the same color. Classically styled acetate frames hold up well to hard use. Costa Del Mar Tybee sunglasses include a cork case, a cleaning cloth, and a mfrs. limited 2-year warranty. 580G LightWAVE glass lensesthe clearest in the industry Scratch- and impact-resistant lenses Polarized to kill glare Mirror coatings (on select styles) help control glare Gradient tint (o select styles) to help reduce eyestrain 100% UVA, B, and C protection Classically styled acetate frames Includes cork case and cleaning cloth