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If you thrive on backcountry trips in temps that would keep most other explorers house-bound, be sure to pack The North Face Dark Star Sleeping Bag for your next expedition. The Dark Star owes its intimidating 0-degree Fahrenheit rating to a hefty dose of Climashield Prism and Apex insulation.

  • Ultralight Pertex ripstop shell is highly breathable and resists abrasion and wind like a champ
  • ClimaShield Prism’s densely packed synthetic fibers trap more heat than standard synthetics and help the insulation retain greater loft despite repeated compressions
  • ClimaShield Apex’s fine-denier fibers reflect radiant heat back to you for a warmer night's sleep
  • Vaulted footbed won’t constrict your feet, and it helps promote circulation to your lower extremities
  • An expedition-grade draft collar prevents creeping cold from entering near your neck
  • Ergonomically shaped hood provides extra comfort, improves the bag’s warmth-retention, and reduces its overall weight
  • Single-point cord lock adjustment means you can be doubly sure you sealed out the chill
  • Included compression stuff sack doubles as a ultralight bag for your summit bid
  • The North Face Summit Series
  • Reviews
  • Q & A

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Warm but breathes like a trash bag.

  • Familiarity: I've used it several times

Everything the other reviewers state is true: its warm, its sort of heavy, and its huge. The inclusion of the compressible stuff sack is a nice touch and is necessity if you want a chance at getting it into your backpack. That is fine with me because I knew it was huge before I purchased it. The only thing that I dont like is that it doesnt breathe well at all, even though its advertised as such. Every time I use it, it gets very damp and humid inside from moisture not being able to escape. Its like sleeping inside a trash bag. If I could do it over, I would get something else.

Solid Winter Bag, but heavy

  • Familiarity: I've used it several times

I bought this for winter overnights in unheated AMC huts in the White Mountains. Performs as expected- incredibly warm. Temp got down to -10F and I was cozy- as long as you're wearing thermals to bed, this bag is sufficient to -20F at least. Agree that it's heavy, but compared to the North Face down version you're only shedding a single pound. Worth the price. compression sack was a nice touch as well.

Great but bulky

    Decided to try out a synthetic bag after destroying my old down bag from stuffing it and sleeping in it whilst damp on longer trips. Being out on a 10 day trip, which starts with a few days of being tent bound in the rain, followed by moving higher on the mountain and having -15c temps neccesitates having a dry/ warm bag.

    Plenty people will say that if you're using a bag solely in cold weather, when precip is coming as snow and never rain, then dampness isn't so much of an issue- whilst this is mainly true I like the idea of a synthetic bag doing the job on longer trips where you might expect a bit of rain as well as cold temps.This ability to cope with damp conditions is a huge bonus (as is the significantly smaller price tag).

    Another situation I like such a bag for is when I'm just planning on using a bivy sack (no tent) in the mountains, and thus more susceptible to any precip.

    The major downside ofcourse is how bulky it is compared to a down bag rated for the same temperatures.

    Too hot? Is that possible?

    • Familiarity: I've used it several times

    Picked one of these up for winter mountaineering. I'm very glad that I did. There is not much to say, other than it will keep you warm and will last for decades. If you are looking at this page, you probably understand the importance of proper sleeping bag construction/insulation. You also understand that this comes at a high price. Admittedly, I am not a big fan of TNF. I feel that they overprice everything... from their fashion focused winter boots, to their "Made in China"... everything. However, I am pleased to report, this bag is worth every penny. It is well made and it performs as advertised.

    Comes with a useful stuff/compression sack. This helps to smoosh this very lofty bag down to about the size of a large paper towel roll.

    If you have not already, add this one to your list of "bags to consider buying." It is one of the best synthetic bags in its class.