Best Books of the Month Shop Costumes Learn more nav_sap_SWP_6M_fly_beacon $5 Albums All-New Fire TV Stick with Voice Remote Grocery Introducing Handmade New Kitchen Scale from AmazonBasics Amazon Gift Card Offer hog hog hog  Amazon Echo Starting at $49.99 Kindle Voyage  McCartney Shop Now Retro Toys Deal
Price: $249.95 & FREE Shipping
In Stock. Ships from and sold by Campmor.

1 Color:
Autumn Autumn
Autumn Loading details...
2 Sizes:
6-Feet 6-Feet
6-Feet Loading details...
6-Feet 6-Inch Loading details...
Size Chart

One-time purchase:

$249.95 + Free Shipping

Other Sellers on Amazon
Buy New
+ Free Shipping
Sold by: BlackOvis
Seller Rating: 4.8 out of 5 stars (171)
Add to Cart

Kelty Cosmic 0 Degree Down Sleeping Bag

by Kelty
69 customer reviews
| 4 answered questions

About the Product

  • Temp Rating : 0º / -18ºC (EN tested)
  • Insulation : 550 Fill-Power Down
  • Weight: Regular - 3 lb. 12 oz., Long - 3lb. 15oz / 1.68kg, 1.76kg
  • Shoulder Girth: 62" (Regular), 64" (Long) / 157cm, 163cm
  • Stuff Size: Regular - 9" x 17", Long - 9" x 18" / 23cm x 43cm, 23cm x 46cm
VIDEO: How to Choose a Sleeping Bag
Not sure how to choose a sleeping bag? Watch this video to learn how to find a warm, comfortable bag. Watch now.

Technical Details

Product Description

With a bright shell design, this bag alludes the feeling of warmth. Perfect for a winter backpacking trip, the Cosmic Down 0 retains warmth exceptionally well by utilizing an insulated draft tube with anti-snag design, an efficient, form-fitting hood, and full draft collar. Box-baffle construction, ground level seams, and differential cut maximizes the warmth of the bag and eliminates cold spots. The 58" dual slider zipper makes it easy to get into out of the bag. Once inside, adjustment of the hood is easy to do with the captured cord lock and Fatman and Ribbon(tm) draw cords, which have distinctive feel so you can determine which cord controls the top and bottom of the hood while dark. Finally, the internal liner loops can hold your liner in place while you sleep and the sleeping pad security loops will keep you on your pad (straps sold separately). Kelty has adopted the European Norm (EN) 13537 test process which provides a standardized comparison method for all sleeping bag brands so that it is easier for you to choose the right sleeping bag for your needs. The two temperature ratings listed are "Comfort" and "Lower Limit." Comfort is defined as the temperature that a standard woman (132lbs / 60kg) will be comfortable at versus lower limit which is the temperature that a standard man (176lbs / 80kg) will be comfortable at. For the Cosmic Down 0, the EN tested Lower Limit is 4F / -16C and the EN tested Comfort Limit is 17F / -8C. Everyone varies in how they sleep, so the temperature rating is only a guide and you may experience being warmer or colder depending on your set of circumstances. •Insulation: 550-Fill Power Down •Shell Material: 50D Polyester Taffeta •Liner Material: 50D Polyester Taffeta

Product Details

  • Item Weight: 1 pounds
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004O706O0
  • Item model number: 35413411
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (69 customer reviews)
  • Amazon Best Sellers Rank: #206,608 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

     Would you like to give feedback on images?

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

18 of 19 people found the following review helpful By Vioxx on January 30, 2014
Verified Purchase
Ok so I'm 6'3 and ordered the "long" version and it fit just fine.

Now to the meat of the review. I do a lot of big mountain winter mountaineering here in Colorado. This past weekend (January) we made camp at about 12,000 feet, and slept there through the night. The low was in single digits, there was frost inside the tent, frozen water, frozen boots, etc....and I was warm. This bag is a 0 degree bag, plain and simple. It's extremely lightweight for a 0 degree bag and if you buy a stuff-sack you can compress this sucker down pretty darn small. A lot of other 0 degree bags are a LOT more money so you might be weary of this one...but it performs.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
55 of 67 people found the following review helpful By Max on November 16, 2013
Size: LongColor: Blaze Verified Purchase
I picked up the Kelty Cosmic as it was the most cost effective down 0 degree bag I could find at the time and with all the hype over down vs synthetic I was eager to switch. I had previously been using a Marmot trestles 0 degree synthetic bag which was everything I hoped for in a 0 degree bag with the only draw back being the bulk and weight. I do motorcycle adventure touring and sometimes find myself camping at altitudes above 8,000 feet as well as experiencing below freezing nightly temperatures quite often. I tour all year around and don't skip winter so in my arsenal of gear my sleeping bag is my number one priority. With my previous Marmot bag I had experienced down to 15F degrees where I was warm and tosty and totally unaware of the outside temp wearing nothing but a cotton T and boxers shorts. In addition the cocoon effect of the Marmot was such that you could leave just your nose sticking out if wanted. Really the only reason I sold the Marmot was to make the switch to down and drop 2lbs and some bulk from my gear, which in motorcycle touring is vital. Sadly I really wish I hadn't gone down this route and am already looking into another Marmot Trestles 0 degree (The weight and volume is totally justifiable due to the comfort experience) or a Marmot Never summer down 0 degree if i can find one at an affordable price.

As for the Kelty Cosmic here is my experience after owning it for roughly two months and using it at least 25+ nights. First off this is a very small bag. I got the long as I'm 6ft tall, around 200-205lbs of average/stocky build and I find it pretty uncomfortable to get situated in. Once situated there is hardly any movement space left and if you're anything but a straight on your back sleeper you'll not like this bag.
Read more ›
1 Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
22 of 25 people found the following review helpful By H. M. Johnson on March 21, 2012
Size: RegularColor: Solid Verified Purchase
I followed the directions from the Kelty website to determine the correct size for myself (5'6) and it said that "regular" is the size needed. I would disagree, it fits but barely. No room to keep extra socks or foot warmers in the bottom etc. But it keeps me warm. Just think about getting a larger size than they suggest if you want room.
1 Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
20 of 25 people found the following review helpful By Diana Kochieva-oren on August 26, 2011
Size: RegularColor: Blaze Verified Purchase
Kept me barely warm in 32 degrees in Yosemite in two sweatshirts, liner pants, sweat pants and down vest. I do get cold very easily. Being a summer camper, I now know what is my lowest temperature threshold :) The bag is light and packs small, it has an expensive feel to it, very pleasant to touch. I will definitely enjoy it more on warmer nights. This year Northern California was experiencing lower temperatures than usual. I am glad I didn't attempt the Yosemite trip with my old cheap 30 degree bag, I could have easily driven off in the middle of the night leaving my hot blooded boys in the tent in search of the hotel room with a thermostat to crank up to tropical. 4 stars for not being as toasty as I expected it to be.
8 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
5 of 5 people found the following review helpful By Rave On on February 5, 2014
Size: LongColor: Blaze Verified Purchase
The Kelty Cosmic 0's best attribute is the price. At about $170 it is hard to find a comparable new down sleeping bag. Pound for pound, cubice centimeter for cubic centimeter, dollar for dollar, no synthetic fill bag compairs to this bag and I do not know of any other name-brand down bag that matches it - on a dollar per value basis.

I was very glad they offer this bag in a long version. I am 6"1" 230 lbs. For me, this bag is roomy enough and I feel comfortable without restrictions. Note that I have a lifetime experience of sleeping in mummy bags so the mummy shape is familiar to me.

The construction is pretty good. The loft is barely acceptable. This is not the high loft down sleeping bag that has made down equipment famous. 550 down is below the minimum recommended quality of loft for serious campers.

Even when new and after fluffing it up, this bag looks "under-inflated"

I would consider this a very packable cool-season bag. It absoultely will not have you comfortable or safe at 0 degrees F and the name is misleading in this regard. I am a hot sleeper and I think it would keep you comfortable down to maybe 15 degrees F

I used this bag with a thinner synthetic bag which I put inside the Kelty Cosmic 0 bag. I wore full top and bottom Merino wool long underwear and had a super high-quality insulated mattress under me. I added a hot water bottle inside this sleep system and with this combination, I slept well at - 25 degrees F for nearly a week in primitive conditions on ice in a three season tent.

I will keep this bag because I can use it as described above in severe cold conditions AND can extend its use into less cold conditions.
Read more ›
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Most Recent Customer Reviews

Want to discover more products? Check out this page to see more: youth sleeping bag