Smith's Polarized Chromapop Mastermind Sunglasses feature crisp, smart styling with strategically located performance details that make this model ready for action. By blocking specific color wave intersections as they pass through the lens, Chromapop is able to eliminate color confusion so your brain recognizes true color, faster. Polarized Chromapop eliminates haze, optimizes color, and increases clarity, enabling you to see the outside world with an unparalleled level of vibrancy. The built in Polarchromic technology also adjusts to changing lighting conditions for maximum comfort. An anti reflective coating on the backside of Smith's Mastermind neutralizes bothersome sidelight reflections while the hydroleophobic coating repels moisture, grease and grime.10% lighter than polycarbonate, 15% lighter than CR 39, and 75% lighter than glass, and four to five times more scratch resistance than plastic lenses, this high impact lens is ideal for all activities from casual to competitive. The Evolve frame material is not only eco friendly, but also one of the most lightweight materials on the market today. Hydrophilic megol nose and temple pads gently grip your skin to help keep the frame in place and increases their holding power when exposed to moisture.