When we're deep in the alpine, the Mammut Eiger Nordwand Advanced HS Hooded Jacket is our shield against brutal mountain weather. Built with GORE-TEX Pro 3-layer fabric, this jacket delivers uncompromising waterproofing and breathability, letting us push toward the summit in confidence. Its recycled nylon face and PFC-free water repellent treatment prove that sustainability can coexist with technical performance. The lightweight build keeps our pack weight down, while the solution-dyed backer saves water during production—another nod to its eco-conscious design. Minimalist features streamline movement on rock, ice, and snow, and the two-way AquaGuard zipper keeps the elements out while giving us easy access to harness tie-ins. Whether we're facing freezing wind or driving sleet, this jacket keeps our focus where it belongs—on the climb.