The Rab Argon Pants are made with a Pertex Microlight outer fabric with a stitch through construction to eliminate cold spots, they are filled with the highest quality 800FP Hydrophobic goose down. Their intended purpose is to provide extra warmth at basecamp, in a bivi or with yoru sleeping bag to increase performance. The Argon Pants are highly packable and are provided with a stuff sack for easy transport. Rab Argon Pants