Blending sporty and casual, the Smith Challis Polarized Sunglasses offer premium performance, lasting comfort, and low key style whether you're in the city or out on the trail. Featuring the same sweeping profile and sport influenced wrap of its larger counterpart, the Colson, the Challis is ideal for people seeking a tighter fit and a slightly smaller lens profile. ChromaPop lenses are not only polarized to eliminate glare, but are also specially formulated to filter out certain wavelengths in order to enhance contrast and color. See vivid greens, stunning reds, and breathtaking blues that look like something out of a dreamscape. The lenses also sport a hydroleophobic lens coating that repels water and resists smudges for your greasy fingers. The Evolve frame is super lightweight yet strong, and is partially made with eco based materials. Hydrophilic megol nose and temples pads get tackier as they get wet, so the harder you sweat the more securely your shades will cling to your face, which is good news when you're getting after it on your favorite trail. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer andor birth defects or other reproductive harm.