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Marmot Lithium Sleeping Bag: 0 Degree Down

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Here's what others have to say...

5 5


  • Familiarity: I've put it through the wringer

I love this sleeping bag! From remote glaciers in AK where outside of the tent the temps were -20 to -30 to high altitude camping in Ecuador I've had it everywhere and it's always kept me warm.

Responded on

Natethor, could you please tell me where did you go in Ecuador exactly? Cotopaxi? Did you have to use a liner to keep you warm?

I'm considering this sleeping bag seriously, my other option is TNF Inferno -20, but it is much heavier. Any recommendation? I'm argentinian so I'm looking forward to use it in the Aconcagua next year.

5 5


Just got the bag. It feels great. I have not used it outside but it has the quality I would expect from Marmot. Backcountry was great and as always very helpful.

5 5


  • Familiarity: I've used it several times

This bag kept me very warm below 15 degrees F for 3 nights in the Shining Rock Wilderness area. It is light, packs down well, and kept me dry and warm in very humid conditions (camping near a river). I would recommend to anyone.

Compression Sack

Compression Sack

Here is the long version in the Sea to Summit Event compression dry sack (item STS000220)

Responded on

what Volume Sea to Summit Event compression dry sack?

Responded on

Also curious what size sea to summit compression sack you used.

5 5

Lofty all-night bear hug? Yes please

  • Gender: Male
  • Familiarity: I've used it once or twice and have initial impressions

This is the first warm down bag I have owned and it is awesome!! its so light, so lofty and so warm!

I was super impressed by the feel of the new Pertex shell material. it feels really light yet remarkable burly like it will take a lot of abuse and be a good protector of the valuable down inside. when I saw how big the bag lofts out too I thought it would be tough to get it into the stuff sack it comes with but its actually very easy and you could get it way smaller with a compression sack. Its super light, which is cool because winter camping requires a lot of gear that adds up.

I am 6'6" and 170 pounds and the long is plenty long for me to get in there and get a good seal with the hood around my face.

I just had this up on Mount Whitney and it was too warm for me, I had to unzip a bit, and there was plenty of room for a couple Nalgene bottles and my ski boot liners in there with me!

The only thing I am bummed about is that the draft collar does not have any sort of closure on the zipper side, which is silly. Marmot should know better. so i will be installing a snap on the draft collar on the zipper side so I can tighten it around my neck and get a good closure.

other than that I am nothing but stoked with the bag, its really comfy, the nylon inside feels good on your skin, and the bag fits my body well, its like a big lofty bear hug all night long, who wouldn't want that?

I have now used the bag multiple times and in some very wet conditions. and I could not be more stoked on it!! the shell does a great job at keeping water out, and even with lots of beaded water on the outer shell I the down stayed dry and lofty. even getting packed away like this for a day it came out of the stuff sack and lofted right back out, the down never got wet! truly amazing