When it is seriously cold, turn to the serious warmth of an insulated jacket. Rock/Creek's selection of down jackets are a must for cold climbing trips, hanging out in camp, or any other activity where you need to retain as much body heat as possible. Down jackets are lightweight, super warm, and have a great comfort range. And better yet, it will retain its shape and loft over the long haul, while wicking moisture away. However, down is that it does not retain warmth as well when wet. If you plan on using your jacket in wet conditions choose one with a waterproof shell. You can trust the men's Mountain Hardwear Sub Zero Jacket, North Face's Men's Crimptastic Hybrid Jacket and the Outdoor Research Transcendent Sweater to thaw you out in the backcountry.