With its fine Italian artisan design, a frame like the Redmond deserves the best lenses, so Smith made these Redmond Chromapop Polarized Sunglasses out of TechLite glass to deliver unsurpassed clarity. Not only do glass lenses enhance clarity, they're also lighter and more scratch-resistant than the competition. They also feature Smith's most innovative Chromapop technology, which filters two specific, unwanted wavelengths of light that cause eye fatigue and color confusion in order to deliver greater definition and popping colors. The skies will look bluer, the grass greener, and the skyscrapers will shine. Smith also polarized the lenses to eliminate glare, and there are treatments to repel reflection, water, and oil smudges.Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.