Enjoy the sporty design and high-performance optics of the Revo Guide Small Polarized Sunglasses, even if you're not guiding trips into the wilderness on a daily basis (although these work great for that to). These streamlined, lightweight shades feature a curved-stem design, enlarged arm vents, and Motion-Fit system for a secure, non-slip fit when you're skiing, boating, and engaging in high-octane activities. The sunglasses' Eco-Use frame transforms castor bean oil into nylon for a more sustainable pair of shades that are extremely lightweight and flexible. Giving you precision optics, the sunglasses' lightweight Serilium (polycarbonate) lens provides crystal-clear vision, especially on the water, with its high-contrast polarization. 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.