The Kawika frames are a retrospective look at one of Maui Jim's original styles. These classic polarized sunglasses are a true testament to Maui Jim's legacy and heritage of providing quality, durable frames with unmatched lens clarity. Details Lens Materials: MauiPure - Maui Jim's most popular lens material. It combines optics almost as crisp as SuperThin Glass with ultra lightweight and excellent scratch and shatter resistance. Rx Power Range: +3.00 to -6.50 Face Size: Medium Fit: Regular - A medium lens front designed for those with an average-sized head. Bridge & Nosepads: Universal Fit - This option accommodates most face shapes.