The Tachi Sunglasses have inherited a lot of the best and premium features from Sweet Protection's Sport Performance Sunglasses, however comes with more of a casual and classy expression for everyday use. The Tachi sunglasses are Sweet Protection's most premium lifestyle sunglasses bridging the gap between sport performance and lifestyle. RIG lens technology: developed by Sweet Protection to provide superior contrast, minimum color distortion and reduced eye fatigue Super oleophobic- and hydrophobic coating Hard-coating on both sides of the lens for easy cleaning and durability 100% UV protection TPR co-molded soft and grippy inserts on the temples for extra comfort and safety