Arc'teryx Cerium Vest

Featherweight and impressively compressible, the Cerium Vest is a go-to layer for cool, dry days in the mountains. It weighs only 170 g, packs down smaller than a grapefruit, and combines 850 fill European white goose down with Coreloft™ 80 synthetic insulation in moisture-prone areas. The recycled 15D Arato™ nylon shell is light and durable, while the 20D plant-based liner contributes to a lower environmental footprint without sacrificing comfort.