Just slip into this waterproof leather boot and be on your way-no need to worry about weather, this pair has you covered. The Thermochromatic lug changes color to indicate when the temperature reaches 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, leather lining for soft, breathable comfort, luxuriously soft sheepskin leather socklining, padded open cell foam footbed provides instant comfort, genuine leather welt, 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.