From short hikes to multi-day tours, this boot keeps all your options open – and is backed by the latest technologies to do so. Putting the literal spring in your step, Mammut Flextron®technology uses a spring-steel sole to provide effective shock absorption, energy transfer, and stability to support your natural stride. Meanwhile, reliable grip is provided by the Vibram outersole and a trusted GORE-TEX membrane keeps you protected from adverse weather. All this in an anatomically tailored design for a comfortable, precise fit. The Ducan collection - a classic for a reason.