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Item #: 331604501

Rated to 15°F and weighing in at less than two pounds, the bag contains the highest quality, highest fill-power goose down there is. Pertex© Quantum® face fabric is water-repellent, and breathable, yet dense enough to resist rips and punctures. Updated with our Down Defender treatment offering an extra level of moisture protection for sleeping bags exposed to wet environments. Flow Gate Construction allows warm air to circulate without allowing the down to shift.


  • Certified 875+ Fill Power Goose Down
  • Down Defender to Improve Water-Resistance in Wet Conditions
  • Insotect Flow™ Vertical Baffle System Reduces Weight and Transfers Heat from the Core of Your Body to Your Extremities
  • Designed to Increase Thermal Value Without Adding Weight
  • Ultralight and Durable 10 Denier Pertex© Quantum® Fabric
  • Wrap Around Foot Box Construction Incorporates Flow Design with Marmot's Classic Trapezoid Shape
  • Full Length Zipper
  • Insulated Draft Tube
  • Hood Draw Cord
  • Insulated Collar with Easy Access Cord
  • Velcro®-free Face Muff
  • Two Way Zipper Sliders


  • Weight: 1 lb 15.96 oz (881 g)
  • Temperature: 15° F / -9° C
  • EN Rating – Comfort: 28.6°F / -1.9°C
  • EN Rating – Lower Limit: 17.6°F / -8.0°C 
  • Fill Weight: 19.41 oz (550 g)
  • Inside Length: 83" (211 cm)
  • Shoulder Girth: 60" (152.4 cm)
  • Hip Girth: 58" (147 cm)
  • Foot Girth: 43" (109.2 cm)
  • Stuff Sack: 7.5” D x 15” L (19 x 38.1 cm)