You need warm clothing when you're walking and scrambling in the high mountains, the Mens Andean Plateau Jacket for example. It has been developed by Jack Wolfskin for ambitious mountaineering and trekking trips with Polartec Power Stretch fleece ideal for the job. As the name suggests, this high–performance fabric is exceptionally stretchy, so movement will not be inhibited. The jacket is therefore perfect for dynamic activities where plenty of freedom of movement is required. The elastane in the fabric ensures the jacket always fits comfortably, however challenging the terrain. When things get chilly up there, the Andean keeps you warm and the soft reverse side feels very pleasant next to the skin.