The innovative Alpine Performer fashioned from impressively tough and abrasion-resistant 3-D polyamide fabric, with integrated hybrid shell for enhanced support and protection. The shoe is very light and comfortable and comes equipped with a range of proven and patented Mammut technologies: Base Fit, Rolling Concept, and the Mammut Gripex Sonar sole technology with its all-round safety and grip concept. The wedge is made from ultra-light injected EVA IP. The Gore-Tex Extended Comfort footwear membrane offers an optimal foot climate and guaranteed waterproofness. The stretchy Gore-Tex in the tongue keeps it crease-free and makes for easy entry/exit of the foot.