Careful modern refinement and clean lines are complemented by the performance features essential to Smith's Polarized ChromaPop Outlier Sunglasses, a forward, stylish model that combines simple form with sensibly considered technical ingredients. ChromaPop has an Abbe value of 45, making it optically superior to most lenses on the market. The higher the Abbe value, the more accurately a lens aligns the spectrum of light waves that pass through it. This is the new super lens of the future. Smith permanently added automatically adapting Polarchromic technology to each ChromaPop lens, too. An anti reflective coating on the backside of the Outlierneutralizes 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 ultra lightweight Evolve frame material is derived from the renewable, non genetically modified castor plant. Characteristics of this material include flexibility, high elasticity, remarkable toughness, and excellent chemical resistance.