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Unearthly comfort.

The Kelty Cosmic 0 Sleeping Bag is a versatile bag that will perform as well during the colder months as it does in the high country in the middle of the summer. Not only does the Cosmic have the light weight and compressibility of a down sleeping bag, but with its new Hydrophobic Dridown insulation, it will retain its insulating properties if it happens to get wet. A standard mummy bag shape maximizes the thermal efficiency of the bag, while a draft tube prevents warm air from escaping out of the dual-sliding, locking zipper. The thermal comfort hood keeps your melon cozy, and the the natural fit footbox lets your feet enjoy an un-cramped night's sleep.

  • 4F EN comfort rating (Men's)
  • 550-fill hydrophobic down insulation
  • Mummy bag
  • 50D polyester taffeta shell and lining
  • Thermal-comfort hood
  • Draft tube with anti-snag design
  • Dual-slider, locking zipper
  • Natural fit footbox
  • FatMan and Ribbon drawcords
  • Stuff sack included

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Here's what others have to say...


Great bag for the price!

  • Gender:Male

I own 3 other bags in various temp ratings. However, I needed a 0 degree bag as I was tired of sleeping in 2 pairs of base layers and a liner for extra warmth in a 30 degree bag with sub-freezing temps outside my tent. The other bags are pretty good but pricey. I've purchased a lot of pricey gear in the last couple of years so I didn't want to spend too much (at all). I did A LOT of research and most of the other good 0 deg bags were VERY pricey ($500+). This bag seemed to have good ingredients by a good but certainly not "Cadillac" of gear/camping companies. After continual research I STILL kept coming back to the Cosmic Down. Just a little bewildered by the price for a 0 degree bag. Maybe a sign from above, I don't know. So, when I saw it was on sale for a really great price at Backcountry I finally grabbed it. As soon as I got it we spent a couple of nights in higher altitudes up in the mountains a few hours away. It dipped well below 30 with freezing rain and I was toasty just in my boxer-briefs, and I mean TOASTY! NO need for 2 pairs of base layers whatsoever. The Cosmic was also VERY comfortable with a couple of practical features. Including, my favorite, loops along the edges of the bag to tie it to a pad. Thus, you don't slip off in the middle of the night. It stuffs a little larger than the other bags but nothing a compression strap or bag can't handle. A very small sacrifice for the price. I use a Big Agnes girdle.

I'm 5'8" and I still have a couple of inches to spare and am quite snug in the regular. HOWEVER, if your'e anything over 5'8" I HIGHLY recommend the large. the bag seems to run a little small. If you're looking for a great bag at a great price then this is most definitely the bag you want. Happy trekking. Leave no trace!