Super thick pile for strong heat retention. Fluffy cushioned feel that wont get caught on your feet. For hard bottom rain boots and safety shoes Great for outdoor work in winter or working in cold places. The plush fleece lining overcomes heavy cold. The elastic cuff does not constrict even if worn for a long time, is a loose fit: 9.6 - 10.6 inches (24.5 - 27 cm), acrylic, polyester, polyurethane. Color: gray.