FEATURES of Smith Lookout Polarized Sunglasses Polarized lenses Medium Fit / Large Coverage Evolve Frame Material Hydrophilic Megol Nose Pads 6 Base Lens Curvature Frame measurements: 57-48-18-135 Featuring Smith's superior ChromaPop polarized lenses The ChromaPop experience is exemplified by crisp optical clarity and vivid color enhancement Smith ChromaPop - Experience world-altering color and clarity By blocking specific color wave intersections as they pass through thelens - ChromaPop is able to eliminate color confusion - so your brain isrecognizing true color - faster. ChromaPop optimizes color and increasesclarity - enabling you to see the outside world with an unparalled levelof vibrance.