Mid-cut boot has a Vibram? outsole with a direct-injected PU light midsole, full-length Receptor? technology, and removable Cambrelle? inlay sole. Color Navajo Brown/Sand. Imported. Features Waterproof and breathable GORE TEX? lining Rich yak leather upper Yak Leather Tougher than any other leather and with even greater potential. Yak hide is first and foremost characterized by extremely high-strength leather. Compared to other cattle hide it is at least 3 times stronger! The additional advantage is that the leather is excellent in resistance to abrasion too?and yet very lightweight. With the natural beauty of scratches and mosquito bites. The authentic patina of the hide with its natural defects and strong markings add a rustic look, which is the hallmark of this exotic leather. No two hides are alike?and every piece of leather has its own personality, its own story. With a texture toughened by extremes of temperature and habitat. Living in the alpine rangeland of the Tibetan Plateau where only few other animals can survive, the yak has developed its hide to be a multi-seasonal shelter?with a thin, compact woven collagen fiber and closed fine grain. These unique characteristics protect the yak in the warm summers and cold winters. Click here for European size information.