The Neutrino Pro Men's Down Jacket from Rab has been a favourite of mountaineers for the past 2 decades. Rab have made updates to their classic design with new recycled materials and a new arm baffle design. It now has even better freedom of movement, with sustainability in mind. Perfect for winter on the mountain, this alpine down jacket is filled with 800FP, RDS certified goose down. This ultra-high lofting down is extremely warm, even in freezing temperatures. The Neutrino Pro uses a recycled, wind and weather resistant Pertex Quantum Pro outer, offering refuge from blizzards, and withstanding snowy weather. The new anatomically engineered twisted arm baffles improve arm pre-curve, enabling complete freedom of movement. Designed specifically with the demands of winter climbing in mind, the Neutrino Pro offers unrestricted movement for your next winter climbing adventure. It can also be easily packed away into its own stuff sack and stored in your pack as it compresses well and is lightweight. This jacket also features a fully adjustable, helmet compatible, down filled hood and a tough, two-way YKK VISLON front zip for ease of use with a harness. Designed for durability in rugged terrain, the shoulders and upper sleeves have been strengthened with Ripstop reinforcements. Outstanding Warmth & Packability | Lightweight yet impressively warm, this alpine-ready down jacket now offers an anatomical fit for a better range of motion for climbing and mountain travel. 800-Fill RDS Down With Nikwax Hydrophobic Finish | Lofty, ethically sourced down with a water-repellent treatment traps body heat and dries quickly. Pertex Quantum Pro | Water-resistant coating to keep you dry and comfortable in fickle mountain weather. Durable Where It Matters | Ripstop material over the shoulders and upper sleeves adds increased abrasion resistance. Specs | [Best Use] Climbing, Mountaineering, Hill Walking; [Material] 20D Recycled Pertex Quantum Pro; [Insulation] 800 FP European Goose Down, Nikwax PFC-Free Finish; [Fit] Regular; [Centre Back Length] (Medium) 77cm; [Hood] Helmet Compatible; [Pockets] 1 Zippered Chest, 2 Zippered Hand