Expedition Jacket GOLD/BLACK The Expedition Jacket is a down filled double construction jacket with box wall outer and a stitch through baffled inner. The Pertex® Endurance outer gives weatherproof protection. This is one of the warmest jacket available in the world today and is designed specifically for use at high altitude and in Polar regions. Pertex® Endurance fabric is both highly abrasion resistant and provides weather protection. Durable patches over the key wear points add extra protect