Kelty Cosmic 0 Degree Sleeping Bag


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The Kelty Cosmic 0 Degree Sleeping Bag is a four-season, synthetic bag that will keep you warm in all seasons and conditions. Campers and backpackers in both wet and dry climates will appreciate this synthetic bag.


  • Material: shell - 40D nylon diamond ripstop
  • Liner material: 50D polyester taffeta
  • Insulation: Kelty CloudLoft ™ Pro
  • Two-layer, offset-quilt construction
  • Top baffle collar
  • Insulated hood baffle
  • 3/4-length, two-way locking zipper
  • Zipper draft tube with anti-snag design
  • Internal liner loops
  • External snap loops allow bag to function as a liner
  • Sleeping pad security loops
  • Hang loops for storage
  • Fa™an and Ribbon™drawcords
  • Captured cordlock
  • Ground-level side seams prevent heat from escaping
  • Differential cut to maximize loft and warmth
  • Stuff sack included
  • Shape: Mummy
  • Comes in display box
  • Size Regular: Fits to 6' / 183 cm
  • Size Long: Fits to 6'6" / 198 cm
  • Regular Specifications:
  • Length: 80" / 203 cm
  • Shoulder girth: 62" / 157 cm
  • Fill weight: 43 oz. / 1.2 kg
  • Stuffed diameter: 10" / 25 cm
  • Stuffed length: 18" / 46 cm
  • Long Specifications:
  • Length: 86"/ 218 cm
  • Shoulder girth: 66" / 168 cm
  • Fill weight: 46 oz. / 1.3 kg
  • Stuffed diameter: 10" / 25 cm
  • Stuffed length: 18" / 46 cm
  • Temp Rating:  0° F / -18° C
  • Total weight: 4 lb 6 oz / 2.0 kg

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Review Summary

3.7 out of 4

3 Reviews

  • Great value: 2
  • Build quality: 1
  • Ease of use: 1
  • Great design: 1

  • heavy: 1
  • large: 1
  • not a true 0 deg bag: 1
Durability: 4 / 5
Features: 4 / 5
Quality: 4 / 5
Fit: 5 / 5
Warmth: 5 / 5
Weight: 4 / 5

3 Ratings & Reviews

Warmth: 4 / 5
from Greenback, TN
45-54 yrs

Kelty 0 Cosmic sleeping bag
November 06, 2010

I have so far just used the bag once. I was sleeping on an poorly insulated air mattress and it was in the hi 30's F outside. I was on the cool side of comfortable. A better insulated mattress would have helped but I do not consider this a true 0 degree bag. It seems to be well made. I'm 6 02 and bought the long size and it had plenty of room for me. Should fit someone taller then me too.

Pros: Great design, Build quality, Ease of use, Great value, Cons: not a true 0 deg bag
Durability: 4 / 5
Features: 4 / 5
Quality: 4 / 5
25-34 yrs

Working so far
October 23, 2012

Comfortable bag. I haven't taken it out in super-cold temperatures yet, but the first time I climbed halfway in to test it I had to get back out because it was too warm. It's a little bulky, but I expected that. Right now, I'm using it while I car camp at a work gig, so I don't care, but if I was going to try to actually take it camping, I would probably buy a compression sack. The stuff sack included is great as a storage bag, but does nothing to try to shrink the pack volume down. So far, it is exactly as described. A little big, no fancy features like a storage pocket, but warm and not too expensive. I'm excited to see how it holds up over time and in colder weather.

Pros: Ease of use, Great value
Durability: 4 / 5
Features: 4 / 5
Quality: 4 / 5
FitPads: 5 / 5
Warmth: 5 / 5
Weight: 4 / 5
from michigan
25-34 yrs

Not for Hiking
August 10, 2011

I had to get a warmer bag for my last trip and got one of these based on price, kind of ignoring the 4.5 lbs weight listed. This bag is too big to take hiking. It's heavy, but I thought that wasn't a killer. But it does not compress a lot and ends up taking up a lot of room in your bag. I had to buy a separate compression bag just to shrink it down. There went the savings. It is very warm and comfortable. I'm 6'0", and found that the bag could have been maybe an inch longer. But, I had a pillow in the bag with me. Without the pillow the bag fit fine. In the end, I guess it depends on what you're doing. If you're driving to a spot and camping in the woods, this is a pretty good bag, especially for the price. If you intend on carrying it on your back for more than a couple of miles, pay the extra money and get something smaller.

Pros: Build quality, Great value, Cons: heavy, large

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Kelty Cosmic 0 Degree Sleeping Bag Photo

Risky Red and Solid.

Available sizes, while supplies last, include size reg and size long: reg, long.

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