Featuring Gore Tex Surround technology, the Salewa Men's Alp Flow Mid GTX Hiking Boots provide your feet with 360 degrees of breathability for total comfort on the trail. Without compromising waterproof protection, Gore Tex Surround technology places a laminated Gore Tex membrane at the sole of your feet. Vented through ballistic mesh air ports at either side of the boot, your feet will be able to breathe out there on the trail. This results in drier and more comfortable feet.The uppers of the boots are composed of nubuck leather with ballistic mesh at the tongue and sides. A protective rubber rand at the toe and heel protect the boots against rocks and stumps you'll inevitably run up against while on the trail. Their climbing style lace closure runs to the tips of the toes, ensuring a precise fit. The boots are built on durable Vibram soles, which have an aggressive tread pattern designed for on and off trail hiking.