Jack Wolfskin Women's Thunder Bay Texapore MID W Fashion Boot Fabric or Textile Imported Rubber sole Shaft measures approximately ankle-high from arch winter boot / waterproof, breathable / easy-care / synthetic leather and fabric / warm fleece lining / winter hiking sole with good grip / water-resistant, synthetic uppers material and water-resistant, robust textile fabric TEXAPORE: waterproof, breathable membrane NANUK: warm and comfortable fleece lining WOLF SNOW: hiking sole with flexible forefoot and winter tread for good grip on ice, snow and slush WINTER GRIP: special rubber compound for good grip at low temperatures / comfort temperature to -20 Degree/-4 DegreeF / lacing system with metal hooks and nylon loops