Getting your layering right is one of the most important things you can do in the mountains, so a key piece like the Mammut Eigerjoch Pro IS Men's Jacket is worth its weight in gold. Luckily, the Eigerjoch's paltry 12-ounce bulk doesn't exactly tip the scales, but its Primaloft Gold synthetic insulation is remarkably warm and breathable, so you can wear it on long skins, tough approaches, alpine climbs, and ski descents. Pertex Quantum fabric repels wind and water, too, so the Eigerjoch functions almost like a softshell, and Mammut decked out key zones with Polartec Power Stretch panels so you can enjoy full mobility when you're climbing, skiing, or trekking. The hand pockets have been engineered to work smoothly with packs and harnesses, and the Eigerjoch stows away quickly into the chest pocket, so you can easily fit it into a pack or clip it onto your harness for quick access.
- Pertex Quantum nylon face fabric
- Polartec Power Stretch back and sleeve panels
- Primaloft Gold synthetic insulation
- Pack- and harness-compatible hand and chest pockets
- Self-stowing chest pocket