Ideal for your active lifestyle, the Revo Descend E Polarized Sunglasses meld clean, sculpted lines with high performance optics for a truly extraordinary pair of shades. Featuring an Eco Use frame, these sunglasses transform castor bean oil into nylon for a more sustainable frame that's extremely lightweight and flexible. Ensuring these bad boys stay put when you're cruising on your boat or hiking down a craggy trail, the frame's Motion Fit system optimizes the fit for stay put performance, and there's an included detachable leashbuoy to ensure these don't fly off your head or sink to the bottom of the lake, should you drop 'em. Dialing in precision optics, the sunglasses' lightweight Serilium polycarbonate lens offers clear vision, especially on the water, with its high contrast polarization and anti reflective coating. In addition, the Element Shed hydrophobic coating keeps dirt, oil, and water from sticking to the lens when you're getting dirty on the trail or lake.