Features of the Smith Guides Choice S Polarized Sunglasses Lightweight, scratch-resistant Techlite polarized glass lenses cut glAre ChromaPop+ lenses Are polarized to cut glare, and they enhance contrast and natural color to make the details pop ChromaPop Glass polarized lenses cut glare and enhance color and contrast while being Highly scratch-resistant Smudge and moisture resistant coating for easy cleaning and clear optics Anti-reflective coating improves clarity and reduces eye strain 100% UV protection Medium-large Fit, medium-large coverage 8-base lens curvature offers a wraparound Fit Megol temple and nose pads provide non-slip grip so glasses stay put Spring hinges self adjust to your face for a snug, comfortable Fit.