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Marmot - Atom 40d Down Bag

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Marmot - Atom 40d Down Bag

Availability: In stock

Stock #: 467Z-

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The Atom’s ultra-light design and Marmot's highest quality down have given it cult status among alpinists as a bivvy bag on extreme climbs, but its comfortable, silky fabric make it a great bag for warm-weather bivvies on casual summer road trips as well.


  • Filled and Finished in Rohnert Park, California
  • Certified 850+ Fill Power Goose Down
  • Down Defender to Improve Water-Resistance in Wet Conditions
  • EN Tested
  • Pertex© Microlight® Shell and Lining Fabric
  • Sewn-Through Baffles
  • Nautilus 6-Baffle Hood
  • Classic Trapezoidal Foot Box
  • Full Length Zipper
  • Stretch Tricot Baffles at Hood and Foot Box
  • Insulated Draft Tube
  • Hood Draw Cord
  • Zipper Garage
  • Velcro®-free Face Muff
  • Stuff and Storage Sack Included
  • Zipper Guards


  • Main Materials Pertex Microlight 20d 100% Nylon Ripstop 1.06 oz/yd Lining Material Pertex Microlight 30d 100% Nylon Ripstop 1.4oz/yd
  • Insulation Material 850+ Fill Power Goose Down Fill Weight 10oz (283g) Bag Loft 4 Bag Temperature F 40

Additional Information

Additional Information

Properties Insulating