Cerium is a must-have for almost any alpine adventure. To take it to a higher level, we have improved the design and purchased more sustainable materials while maintaining its excellent thermal weight ratio and portability. Responsible procurement of 850 padded down (using Corelaft synthetic material in moisture-sensitive areas) provides superior warmth. The outer layer is made of recycled 15D Arato nylon and dope dyed yarn, making it light and durable. Warm StormHood extends warmth, and a streamlined, ergonomic fit allows easy layering.