ABOUT CASCADEWe are fed by gravity. The call of the mountains guides us to push for the summits, but it is the downhill pursuits that drive us. Like water cascading out of the mountains in spring, to refuel the land and our spirits, the CASCADE is a celebration of our roots in the mountains and our thirst to Explore More! The CASCADE is inspired by ZEAL's classic frames, adding performance elements to a timeless frame, featuring our plant-based, petroleum-free Z-Resin materials and our Premium Polarized e-llume lens to provide maximum clarity in the lightest package, helping you perform at your highest levels while never sacrificing style or your beliefs in protecting our outdoor playgrounds. Featuring our unique rubber-touch feel and a classic keyhole bridge, CASCADE will stand the test of time from the backcountry to backyard parties. POLARIZED ELLUME BIO-PLASTIC LENS PROFLEX Z-RESIN BIO-PLASTIC FRAME PIN HINGE Zeal Cascade Sunglasses