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Marmot Atom Sleeping Bag: 40 Degree Down

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Here's what others have to say...

4 5

Solid bag

  • Familiarity: I've put it through the wringer

Simple mummy construction and high quality down never go out of style. I found it true to it's rating as I'm a cold sleeper and was fine down to about 48 degrees but with a fleece layer was comfortable to 40 sleeping on a small zlite foam pad.
My only complaints are that the zipper snags a lot due to the lightly filed draft tube and I would have preferred shock cord for the hood cinch(totally personal preference).
In terms of fit, I'm 6'2" and 150lb and the tall fits me with room to spare in both height and width(would love a slim size!).
The dwr finish held up admirably when my tarp started leaking in heavy rain and the treated down allowed for quick drying with only body heat the next night in a shelter.
In all, a great summer bag for ultralight backpacking!

5 5

Excellent Product

  • Familiarity: I've put it through the wringer

I bought a Marmot Atom 40 degree down sleeping bag to mate up to an Exped DownMat 7 LW inflatable sleeping pad for my sleep system . The Atom has continuous baffles, so I can move all the down up top and use it more like a quilt for cold weather. My 20-inch wide foam Ridgerest wasn't keeping me warm enough and I was waking up at around 3 or 4 in the morning. The combo worked great on a section hike of the Appalachian Trail in the Smokey Mountains. The Atom is rather wide in the shoulders and spilled over the sides of the Ridgerest. The long/wide version of the DownMat fixed that problem. I love the silky smooth material and the drawstring hood works and fits like a charm.