Mammut made the Kento Guide High GTX Boot for classic mountaineering and hard hikes in any season. Gore-Tex gives rugged waterproofing against winter weather, and is comfortably breathable in the summertime when you're trekking in higher altitudes. The upper is mostly nubuck leather for long-lasting durability, but there's a bit of 3D memory foam around the heel for a customized fit and enhanced mobility. Underfoot, the Kento Guide has a dual-density midsole for shock attenuation, a PU wedge for stability, and Poro wedge for support. Vibram's Hexa Tech rubber includes a heel insert for crampons, and large lugs ensure proper traction on anything the mountain throws at you.