This waterproof slip-on style is built with technology to keep you stylish, warm and comfortable no matter the weather. The Thermochromatic lug changes color to indicate when the temperature has reached freezing. The Vibram Arctic Grip rubber outsole is designed to keep you on your feet-its technology grips to slippery, wet ice. Features: Weathersmart water-repelling leathers keep feet dry without sacrificing comfort or style, waterproof full grain leathers uppers and lining for soft, breathable comfort, luxuriously soft sheepskin leather socklining, soft memory foam plus supportive EVA sock provides a customized comfortable footbed, sealed seams and non-wicking threads keep feet dry, thermochromatic lug senses when temperatures drop to 32 degrees fahrenheit or 0 degrees celsius. Material: Leather, Rubber, Memory Foam, Man Made.