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Arc'teryx W's Nuclei SV Parka
Serious cold requires serious warmth. Packable, light, and efficient, the Nuclei SV is our warmest synthetically insulated belay parka. Varying layers of Coreloft™ insulation are strategically placed to provide maximum warmth while keeping weight down, and the light, tough Arato™ 15 shell is breathable, windproof, and repels light moisture. Three external and two internal pockets keep essentials at hand, and the helmet compatible StormHood™ protects without impeding vision.