MFC Redneck Maddox's Gros Ventre Sun Gaiter Skin protection without the grease! With an SPF of 20, you will be protecting your bodys most valuable organ: the skin. The softest, lightest, most comfortable seamless sun gaiter on the market today. MFC's soft polyester fabric has the feel of a brushed cotton material, but with the breathable, moisture-wicking properties of technical polyester.