Arc'teryx Cerium Pant Men's is a lightweight and highly packable trouser filled with premium goose down with an 850 fill power rating. It is perfect for insulation during static phases or on bitterly cold days in the mountains.

The outer material is moisture-repellent with wind-resistant properties, and the trouser offers an excellent warmth-to-weight ratio. The streamlined profile makes it well suited for use under shell trousers, and anatomically sewn patterns ensure good freedom of movement.

In terms of practical features, the trouser has leg zips for easy on and off, a low-profile waistband that is simple to pull on, a thigh pocket with zip, and a stuff sack with drawcord.