Hobie Dana Womens Sunglasses - Frame Type: Wrap Zyl, Frame Material: TR-90, Lens Type: Polarized Polycarbonate, Hobie has always stood for the highest quality polarized lenses available. With the addition of our new Hydroreflective lens coatings, you get unmatched vision on and off the water. Hydoreflective LensesPolycarbonateTR-90Metal Hinge8 Base CurveS FitRx Friendly