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Item #: 331852203

A dependable workhorse for expeditions in the world’s harshest environments with temperatures down to -40 degrees, this lofty Summit Series® bag is insulated with water-repellent 800-fill ProDown and constructed with a wider, roomier cut and a center zip to make it easier to get in and out.


  • Our warmest expedition bag, designed for the coldest places on earth
  • 800 fill ProDown™
  • Generous cut allows you to wear more layers or to "maytag" in the bag
  • Full draft collar and integrated draft overlap for comfort and to prevent heat loss
  • Water-resistant Neovent Air fabric on hood, footbox and back protects moisture-prone areas
  • Trapezoidal side baffle to prevent down migration
  • Center zipper for easier access
  • Internal pocket for insulated storage
  • Compression sack and storage sack included
  • Hood cinch-cord seals out the cold


  • Weight: 4 lbs 4 oz (1.928 kg)
  • Temperature: -40° F / -40° C
  • Fill Weight: 2 lbs 15 oz (1.356 kg)
  • Inside Length: 83" (211 cm)
  • Shoulder Girth: 66" (168 cm)
  • Stuff Sack Size: 12" D x 22" L (30.5 x 56 cm)