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Cosmic Down 0

Item Number: 35413513
2 Reviews: Read all Reviews  |  Write a Review
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Backcountry.comKykeeBackcountry EdgeMoosejawBob Wards


With a bright shell design, this bag alludes the feeling of warmth. Perfect for a winter backpacking trip, the Cosmic Down 0ºF retains warmth exceptionally with the insulated draft tube, hood, and collar baffles. 


Bag Features:
  • Box baffle construction
  • Efficient, form-fitting hood
  • Full draft collar
  • 58 inch dual-slider locking zipper
  • Zipper draft tube with anti-snag design
  • Internal liner loops
  • Sleeping pad security loops
  • Hang loops for storage
  • Ground-level side seams and differential cut for maximum warmth
  • Stuff sack included
  • FatMan and Ribbon™ drawcords
  • Captured cordlock


Temp Rating: 0° / -18°C
Shape: Mummy

EN Comfort Limit: 17oF / -8oC
EN Lower Limit: 4oF / -16oC

Size Regular:
  • Fits to: 6 ft / 183 cm                                   
  • Length: 78 in / 198 cm
  • Shoulder girth: 62 in / 157 cm
  • Fill weight: 39 oz. / 1.09 kg
  • Total weight: 3 lbs 12 oz. / 1.68 kg
  • Stuffed diameter: 9 in / 23 cm
  • Stuffed length: 17 in / 43 cm
Size Long:
  • Fits to: 6 ft 6 in / 198 cm
  • Length: 84 in / 213 cm
  • Shoulder girth: 64 in / 163 cm
  • Fill weight: 42 oz. / 1.18 kg
  • Total weight: 3 lbs 15 oz. / 1.76 kg
  • Stuffed diameter: 9 in / 23 cm
  • Stuffed length: 18 in / 46 cm


550 Fill-Power Down

Shell material:
50D Polyester Taffeta

Liner material:
50D Polyester Taffeta
Customer Reviews
Cosmic Down 0
Overall Rating:    based on 2 reviews
Only registered customers can review products
Posted by James
November 30, 2013
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(2 people found this comment helpful)
Purchased 3 of these bags for myself and my two young scouts. Last campout temp went down to 15 with high winds. My 10 and 12 year olds loved the bags. After two nights of camping in the cold they wanted to stay another night. I'm 5' 11" I purchased the long bag. I was comfortable, I did not have any cold spots. The loft was great. I did not feel confined in the bag, I'm 180lbs. I did not have any problems with a smell as the other reviewer stated. The quality was very good, I would recommend this sleeping bag. I also have the Cosmic Down 20 and love that as well.
Posted by Lola
April 28, 2013
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(2 people found this comment helpful)
I purchased this bag for the first leg of the AT this spring. It kept me warm and toasty in a blizzard but I nearly gagged from the stench when I opened it every morning. I figured my sweat had seeped in and created a nasty moist environment in the bag. Every morning and every night I would air the bag out in the sun while I set up and broke down camp. Still no improvement. Finally I broke down and got in to town to go to a laundromat. I washed it in a gentle cold cycle with down wash and dried on tumble. Instead of making my bag smell better it made the dryer stink! Gross. So ultimately, great bag for keeping warm if you can handle the stink it holds on to. For background info, I'm a pretty hygienic girl and I don't sweat that much when I sleep. This bag just loves to trap odors and hold on to them.

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