The etched metal bridge, round eye styling, and wire-core temple of the Smith Women's Questa Polarized Sunglasses give them a distinct retro look. Part of the Smith Archives collection, the Questra pays homage to vintage sunglass designs from Smith's past lines. The cellulose propionate frames look similar to acetate, but are more lightweight to improve comfort. Carbonic TLT lenses provide crystal clear vision, and they're polarized to eliminate glare from reflective surfaces such as snow and water. 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.