Designed with smooth and flowing lines, the Smith Women's Polarized ChromaPop Sidney Sunglasses feature a rounded lens and keyway bridge, while the lightweight Evolve frame is stress-resistant and eco-friendly. Additionally, the ChromaPop+ lens technology eliminates color confusion caused by intersecting green, red, and blue wavelengths. This correction process creates higher levels of color saturation and more vivid optical clarity. Additionally, the lenses are impact-resistant while the megol nose and temple pads assure a slip-free fit, even when precipitation or sweat gets the best of you.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.