Marmot Atom 40-Degree Sleeping Bagsearch

Marmot Atom 40-Degree Sleeping Bag

Marmot Atom 40-Degree Sleeping Bag

Where's the price?
To negotiate the best possible price for our members, we must agree to hide our prices externally.

Light & Silky Fabric, Water-Resistant Down

Designed for warm-weather camping, summer road trips, and minimalist adventures, the Marmot Atom 40-degree sleeping bag has also earned cult status among alpinists who use it as a bivy bag on extreme climbs. It’s made of comfy, silky Pertex 20d fabric and insulated with 800-plus-fill-power goose down that’s been treated with Down Defender for reliable water resistance. The oversized draft tube eliminates cold spots, while the nautilus multi-baffle hood and hood muff wrap around your head and face to reduce heat loss. Roomy around the shoulders with a trapezoidal footbox that matches the shape of your feet, the Atom weighs just 1 pound and 4.7 ounces in the regular length.

Note: At checkout, choose the Atom regular (base price) or the Atom long (+ $18).

Marmot Atom 40-Degree Sleeping Bag
Marmot Atom 40-Degree Sleeping Bag


  • Marmot
  • Main material: Pertex 20d 100% nylon R/S 1.03 oz/yd
  • Lining: 30d 100% nylon DWR 1.09 oz/yd
  • Insulation: 800+ fp goose down with Down Defender
  • Bag temperature: 40º F (4º C)
  • Zipper position: Left
  • Full-length locking YKK 2-way zipper with zip-guard slider
  • Anatomical wrap-around footbox
  • Smooth-curved, sewn-through baffles
  • Nautilus multi-baffle hood with drawcord
  • Snagless insulated draft tube
  • Zipper garage
  • Internal stash pocket
  • 2 hang loops
  • Pack volume, regular sleeping bag: 3.6 L (219.7 cu in)
  • Pack volume, long sleeping bag: 3.9 L (238 cu in)
  • Weight, regular sleeping bag: 1 lb 4.7 oz (589 g)
  • Weight, long sleeping bag: 1 lb 8.5 oz (690 g)


All orders will be shipped by Massdrop.

Estimated ship date is July 18, 2017 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.

Recent Activity

Joined the drop

Joined the drop

Joined the drop