The Karakoram range is where the world's best and most adventurous alpinists go to test their survival skills in the mountains. So we built this 0-degree bag to be comfortable, warm, lightweight, and ready to trek up those daring peaks. DWR treated down retains its loft even when damp/wet, and the 800-fill power keeps in as much heat as possible during the night. This bag has you covered during cold-swept nights at higher altitudes.Eddie Bauer First Ascent is a comprehensive collection of premium, technical outdoor products for all mountain experiences, informed by over 100 years of product development and design expertise.