High Mountain Missions.The women’s POSITRON is a regular-fitting technical down jacket built for alpine expeditions at high altitudes. It features an immensely warm 800-fill power padding of high-quality European Goose Down. Rab’s down products are ethically sourced, RDS certified, and feature a hydrophobic fluorocarbon-free coating to remain dry. The Positron features heat-capturing box-wall construction through the torso, back, and hood, helping this jacket perform at altitudes near 6000m. Stitch-through construction on the sides and arms increases mobility and comfort. A water-resistant Pertex face fabric and durable ripstop lining secure the down insulation. A large helmet-compatible hood with a face baffle and polymer peak provide warmth for mountaineering activities. Waterproof VISLON AquaGuard zippers fasten the front opening and hand pockets.