The men's Arc'teryx Cerium Vest offers an impressive warmth-to-weight ratio with its 850 fill European white goose down. Down Composite Mapping maximizes warmth and places synthetic insulation in moisture-prone zones. The durable, wind-resistant outer layer is made from recycled 15D Arato nylon, with a smooth, plant-based Arato liner. An insulated collar, adjustable hem drawcord, and secure pockets enhance comfort and practicality. It's Fair Trade Certified, bluesign approved, and meets the Responsible Down Standard with recycled materials.