An alpine-ready midlayer in cold conditions, a warming layer during rest phases – the iconic Cerium is made for backcountry missions. Featuring a refined design and sustainable materials, it delivers outstanding warmth, packs small, and is feather light. Responsibly-sourced 850 fill down – with Coreloft™ synthetic used in areas prone to moisture – provides premium insulation. The recycled 15D Arato™ nylon outer is light and durable, and the streamlined design is articulated for freedom of movement. Redesigned with a roomier fit in the chest, reverse coil front zipper and TPU pulls for a cleaner profile and improved durability.