(Rear Size and Color) Fabric type Adidas Primeknit upper with GORE-TEX Duratherm Care instructions Machine Wash Origin Imported Sole material Continental Rubber About this item Continental Rubber outsole External sleeve with zip Description Hiking in cold or winter scenarios has never been so nice. This adidas Terrex Free Hiker shoe was specifically designed for ultimate comfort on long hikes. Its socklike Primeknit upper, paired with COLD.