You're not hitting the bunny slopes, you're planning on a long (and awesome) day at altitude, and you need a high-tech, insulated jacket like the Men’s Shadow Jacket that can keep up. The 700-fill-power down insulation with water-resistant Down Defender treatment will stay warm even when wet, while the waterproof and breathable Marmot MemBrain® fabric keeps you dry and comfortable in less than perfect weather. Heat-releasing PitZips help regulate your temperature. Reinforced shoulders and sleeves add durability where you need it.