When it comes to extreme backcountry exploring, no name carries more clout than The North Face, which has earned its reputation by outfitting explorers nearly as long as Cabela's has been outfitting hunters and fishermen. Their Alpenglow Series of sleeping bags offer some of the warmest, most packable choices in the industry today. The Darkstar is the warmest synthetic bag offered by The North Face. It's built for use on expeditions in harsh, sub-zero conditions. It's made with overlapping shingle construction to minimize cold spots, ClimaShield™ synthetic insulation for warmth, Firestorm fabric on the top for heat retention, BottomLine nylon on the bottom for water- and abrasion- resistance, and a soft, breathable silk lining. Imported.