Your hardwearing winter refuge, this iconic down jacket offers reliable warmth, mobility, and packability for mountaineering and exploring at altitude. Easily deflecting snow and spindrift, it has a weather-resistant Pertex® Quantum Pro outer with ripstop for added durability. It’s filled with 800FP down in stitch-through baffles, allowing it to compress down small enough to stash in your pack. Whether you’re questing up a frozen waterfall or belaying from an exposed ledge, the Neutrino Pro lets you move freely with fine-tuned sleeves for complete mobility.