Named for the popular hiking trail in Boulder, these sunglasses feature a round lens, retro keyhole nose detail, and lightweight durability. They???re tough enough to get you to the top of the mountain and stylish enough to head straight to the juice bar when you???re done. . ??. . . . FEATURES. . . . . . N3??? Lens Technology. . Co-injected Rhyno-Tuff?? Air Frames. . Cam-Action Hinges. . Mastoid Temple Grip???. . . . . . ??. . . . All Native Eyewear sunglasses are backed by a lifetime warranty. . This product contains a chemical known to the state of California to cause birth defects or other reproductive harm 764824015083 28408900007 180 903 527