What Our Gearhead(R) Experts Are Saying:"This jacket is my alpine workhorse-it's warm enough for summit days and belay stances, but still lightweight and packable. The Pertex Quantum Pro shell sheds snow and wind like a champ, and the 800-fill down makes it surprisingly toasty for its weight."The Neutrino Pro Hoodie is our cold-weather security blanket for demanding alpine missions. Rab built this jacket with a water-resistant Pertex(R) Quantum Pro shell and packed it with high-loft 800-fill European goose down, giving us the warmth we need for frigid bivvies, icy belays, and summit pushes without the weight or bulk. The slim silhouette and articulated fit make it a capable midlayer under a shell or a standalone insulator in harsh mountain environments. We count on the Neutrino Pro for everything from winter mountaineering and high-altitude trekking to cold-season cragging. Features like a helmet-compatible hood with a stiffened brim, two-way VISLON(R) zip with storm flap, and glove-friendly cuff adjustments all speak to its alpine intentions. Updated with internal stash and stuff pockets, this jacket packs neatly for backcountry travel and offers refuge when the wind starts howling and the mercury drops.