Marmot Atom 2022

Only %1 left
As low as €288.96 Regular Price €339.95
Including V.A.T.
More Information
Insulation Down
Comfort temperature 0° / 10°
Weight 500 - 750g

Quick overview

Ultralight for backpacking treks and overnights in mild temps, bring the Marmot Atom Sleeping Bag when you want to keep pack weight at a minimum. Its certified 800-fill-power-down insulation—protected by a Down Defender treatment, curved baffles, and a Pertex® Quantum shell—will keep you warm as you sleep. Comfortable extras like the anatomically designed footbox, multi-baffle hood, and secondary zipper for ventilation make this lightweight sleeping bag hard to leave.


Mummy sleeping bag
A mummy-shaped sleeping bag offers several advantages. The close-fitting shape means there is less room for air in the sleeping bag. You'll have the air that's in there up to temperature faster, making the sleeping bag warmer than a rectangular model. Also, most mummy sleeping bags come with a hood and a collar just above the shoulders that you can tighten. These features keep the heat trapped inside the sleeping bag and protect your head and neck, where you lose the most heat. The tapered shape reduces weight and volume in your backpack, bike pannier or car trunk.

Down insulation has an excellent insulation-to-weight ratio. It is very compressible, so a bulky, warm sleeping bag, can still be reduced to a small, manageable package. Also, the weight of a down-filled sleeping bag is much lower than that of a synthetic-filled sleeping bag with a similar temperature range. The temperature range of down is greater than synthetic materials such as polyester. This means that a warm sleeping bag can be used comfortably even at higher temperatures. Finally, down has a much longer lifespan.


  • Certified 800-fill-power-down insulation offers lightweight warmth; water-resistant Down Defender finish provides an extra level of moisture protection and retains critical loft of the insulation
  • Pertex® Quantum nylon is designed to protect from wind and improve the efficiency of insulation; shell and lining fabrics are 100% recycled for reduced environmental impact
  • Smooth, curved baffles reduce down shifting; nautilus multi-baffle hood limits heat loss
  • Anatomically designed footbox with wraparound construction increases warmth and room for feet
  • Main 2-way, full-length zipper with anti-snag slider and insulated draft tube; secondary fold-down zipper provides added ventilation and easy access
  • Interior stash pocket stows small camping gear
  • ISO tested for temperature rating
  • Insulation: 800+ Fill Power RDS Goose Down Down Defender
  • Insulation Weight: 235 g
  • Insulation Type: Down
  • Recommended Use Temperature: 4°C
  • Temperature Rating Comfort: 6°C
  • Temperature Rating Limit: 1°C
  • Temperature Rating Extreme: -14°C
  • Zipper Option: Left
  • Shape: Mummy
  • Main Material: Pertex Quantum© 100% Recycle Nylon Plain Weave, Pertex Quantum© 100% Recycled Nylon Plain Weave
  • Lining Material: 20d 100% Recycled Nylon, Cire Back
  • Size on Shoulder: 155 cm
  • Size on Hip: 142 cm
  • Size on Foot: 113 cm
  • Pack Size: 30 cm x 15 cm
  • Weight: 620 g
Marmot Atom Reg L
Weight (grams) 620 g 675 g
Up to bodysize (cm) <183 <198