Kelty Cosmic Synthetic 20 Sleeping Bag

Item No. 1465-35428620
$99.95 - $109.95

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Product Description

The Kelty Cosmic Synthetic 20 Sleeping Bag is the best value for your next backpacking trip. The Kelty Cosmic 20 is a mummy bag that will keep you warm for an affordable price. CirroLoft synthetic insulation keeps you comfortable in temps as low as 32 degrees Fahrenheit. Plus, the nylon shell is buttery soft so you're always cozy when you crawl in. Take on your next adventure with the comfortable, compressible Kelty Cosmic Synthetic 20 Sleeping Bag.

  • Buttery-soft
  • Natural-fit spacious footbox
  • CirroLoft synthetic insulation
  • Compression stuff sack included
  • Environmental & health friendly PFC-Free DWR
Regular Specs:
  • Length: 78 in.
  • Fits Up To: 6 ft.
  • Fill Weight: 30.5 oz.
  • Shoulder Width: 31 in.
  • Stuffed Size: 16" x 9.5"
  • ​​​​​​​Total Weight: 2 lb. 13 oz.
  • ISO Temp Rating (Limit): 22° / -6°C
  • ISO Temp Rating (Comfort): 32° / 0°C
Long Specs:
  • Length: 84 in.
  • Fill Weight: 33 oz 
  • Fits Up To: 6 ft. 6 in.
  • Shoulder Width: 32 in.
  • Stuffed Size: 16" x 9.5" 
  • Total Weight: 3 lbs 4 oz
  • ISO Temp Rating (Limit): 22° / -6°C
  • ​​​​​​​ISO Temp Rating (Comfort): 32° / 0°C
  • Insulation: Cirroloft
  • Shell Material: 380T Nylon Taffeta
  • Liner Material: 50D 300T Poly Taffeta

Customer Reviews

4.5 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Excellent bag
Awesome experience! First use was in a camp in NE Washington and temps in the low 30s at night. Performed flawlessly.
November 1, 2021
Originally posted at
Rated 4 out of 5
Works great!
Use this sleeping bag for a rim to rim hike. Got down to the low 40s at night and my wife was plenty warm in it. Only complaint is that it does not pack down quite as small as we were hoping. It fit in her pack but didn't leave much room.
October 26, 2021
Originally posted at
Rated 5 out of 5
As advertised
Definitely a 20 degree bag usually someone who gets cold easy but was actually a little too warm in 30 degree weather overall would definitely recommend very high quality so far love Kelty and have only been ordering from them for outdoor gear/camping equipment
October 13, 2021
Originally posted at
Rated 5 out of 5
Solid sleeping bag
October 11, 2021
Originally posted at
Rated 5 out of 5
Comfortable and Lightweight
Tested it out and feel pretty confident that this sleeping bag will hold up in the backcountry!
March 15, 2021
Originally posted at
Rated 5 out of 5
Just what I needed!
Brought this bag camping around 8000 feet outside Boulder, CO, on December 11th and it preformed quite well. Knowing it was supposed to get very cold, I added an external canvas bivvy to the sleep setup in my tent. It ended up getting down to about six degrees late that evening but with my clothes, the bivvy, and this bag, I stayed reasonably comfortable the entire night. Based on this initial stress test, I'm certain that above 20 degrees this bag will keep me toasty warm. Thanks Kelty!!
December 13, 2020
Originally posted at
Rated 4 out of 5
Great sleeping bag
I have used this for several hunting trips this year. In about 30 degree weather at night it does great I stayed comfortable and warm. Does a great job of keeping all the cold air out once the bag is fully zipped. I back packed hunted with it and didn’t take up a lot of space. I would overall recommend this sleeping bag to any archery hunter or for early season October hunts.
October 14, 2020
Originally posted at
Rated 5 out of 5
Super compact!
Love this sleeping bag! It's super light weight, compresses super small, and is great for backpacking. My only suggestion is to follow Kelty's size recommendations. I got the "long" as a 6' 1" male thinking the added leg room would be nice. Plot twist: it created more open space at the bottom for my feet to get cold in sub-freezing weather. In hindsight I should have gone regular size as they suggested, but no regrets in the overall purchase in terms of quality!
September 23, 2020
Originally posted at
Rated 4 out of 5
Cosmic 20
Great bag for the money. Took it out west for an elk hunt, temps got down to upper 30s at night and was warm and comfortable. Light weight, packs up easily.
September 21, 2020
Originally posted at
Rated 5 out of 5
Love it
Got this for car camping or any future camp trips that aren't ultralight backpack trips. Zippers great. It's very comfortable. True to warmth rating. Kelty makes fantastic mid priced camping gear
September 20, 2020
Originally posted at