The recommended boot for traditional mountaineering and challenging trekking. Evolution of the Nepal Trek model, adopts the upper of the Nepal Evo model combined with a less rigid and lighter structure. Ideal for traditional mountaineering, challenging trekking and for hiking professionals who always pretend maximum performance, in every condition of use. Using the GORE-TEX® lining makes it completely waterproof and breathable. Upper cutting with joint "3D Flex System", innovative multidirectional ankle joint system. New bandage and comfortable shape. New intersuole with different shock-absorbed pu thickness in areas underlying the heel and the foot plant. Exclusive sole with IBS technology (Impact Brake System), designed in collaboration with Vibram®, designed to decrease the impact on hard terrain. Removable teeth with built-in aeration system, gives the possibility to have a custom fit adjustment for each foot. Sliale in EZ OUT tape (patented) facilitates the locking of the lock. The new model weighs only 1700 g. Upper: IDRO-PERWANGER® Leather Water repellent 3+ mm Lining: GORE-TEX® Performance Comfort Insole: IBI-Thermo insulating 6 mm Patents: Recorded Design Weight: 790 G (1/2 pair) Measurements: 36 - 42 (including half measures ) Sole: Vibram® Impact Brake System.