"What Our Gearhead® Experts Are Saying:""This hoodie is my go-to midlayer for alpine climbs and fast-moving missions. The Polartec Powergrid fabric is light, wicks moisture, and dries fast, so I never feel clammy on the ascent. I also love the half-zip—it dumps heat quickly without needing to stop and strip a layer. It’s simple, versatile, and fits perfectly under a harness.""When we’re moving quickly through mixed terrain or pushing into high alpine objectives, the Mammut Eiger Nordwand Advanced FL 1/2-Zip Hooded Jacket delivers the breathability and mobility we need. Built with lightweight Polartec® Powergrid™ stretch, it balances moisture-wicking performance with abrasion resistance, making it an essential layer for fast-and-light pursuits. Every detail is tuned for climbers: articulated patterning for freedom of movement, a fitted hood that layers under a helmet, and offset shoulder seams that reduce pressure points under a pack. The long half-zip makes it easy to vent heat on strenuous pushes, while a stretch-woven chest pocket keeps essentials handy. Treated with Polartec® Fresh Face®—a plant-based, metal-free anti-odor technology—this hoodie stays fresher for longer on extended trips. Durable flatlock seams and repair-friendly construction round out a versatile alpine layer that’s as tough as it is light."