The Rab Men's Glaceon Pro Jacket is warm for winter weather and packable so you can take it mountaineering or hiking. Its down insulation is surprisingly light and packable for how warm the jacket feels, and a Nikwax finish keeps the down lofty and warm in wet weather. A Pertex Quantum Pro shell sheds snowfall and light rain while blocking brisk breezes with durable windproof, water-resistant weather protection. A regular fit lets you layer over baselayers and fleeces with ease. The two-way zipper accommodates climbing harnesses comfortably.