RAB says about the Axion Pro Jacket
Warm, packable down jacket for winter hiking and mountaineering. Built with a lightweight Pertex® Quantum Pro fabric and recycled 700FP down, it offers excellent warmth for weight, ideal for combatting the cold as you explore beyond the treeline. Pertex® Quantum Pro ripstop nylon outer is windproof and water-resistant. Fully adjustable, helmet compatible down-filled hood with stiffened peak for increased protection. 2-way YKK® VISLON® front zip with insulated storm flap. Tricot lined chin guard . Mountain collection - best warmth to weight in category . Cuff adjustment and elastication for optimum fit when wearing gloves