Blending classic style with polarized performance, the Revo Harness Polarized Sunglasses are ideal for daily wear, outdoor adventures, and water sports. The sunglasses' Eco Use nylon frame uses castor bean oil for a more sustainable, extremely flexible, and lightweight pair of shades. Keeping these on your face when you're hiking or paddling, the sunglasses' Motion Fit system optimizes the fit for stay put performance there's an included detachable leashbuoy to ensure these don't fly off your head or sink, should you drop 'em in a lake or river. Providing the clarity to see without distracting glare, the Serilium polycarbonate lens gives you high performance optics, especially on the water, with its high contrast polarization. In addition, its Element Shed hydrophobic coating keeps dirt, oil, and water from sticking to the lens when you're getting after it on the trail or water.