The Mammut Taiss Light Mid GTX mountaineering boots are designed for lightweight durable and comfortable climbing expeditions. The upper of the model is created using the new Georganic 3D technology from Mammut which provides a natural fit and comfort during long hikes. This upper is made from soft schoeller materials for protection and comfort and a breathable Gore-Tex membrane locks out moisture keeping your feet dry when walking through snowy fields and muddy trails. Vibram outsoles allow you to walk confidently on varied terrain , on wet and dry surfaces, and a crampon-compatible design allows you to easily overcome snow-covered crossings and glaciers.