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Kelty Cosmic 20 Degree Down Sleeping Bag - Ultralight Backpacking Camping Sleeping Bag with Stuff Sack

4.7 4.7 out of 5 stars 1,002 ratings

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About this item

  • Polyester
  • Made in the USA or Imported
  • The Kelty Cosmic 20 Degree sleeping bag is ideal for 3-season backpacking and camping. Water-resistant down insulation and an array of features make this sleeping bag a great combination of value and comfort.
  • This sleeping bag is insulated with 600-fill DriDown. Renowned for efficiency in retaining heat and compressible properties, down has an incredibly soft, comfortable feel, and continues to provide the best warmth-to-weight ratio of any insulation.
  • Employing a unique, innovative polymer application, DriDown actually creates a hydrophobic finish on each individual plume of down. This treatment results in insulation that stays dry longer and dries faster.
  • A draft tube behind the 60" two-way locking anti-snag zipper and an insulated hood enhance the thermal efficiency of the Cosmic 20 Degree bag.
  • A polyester taffeta liner provides internal comfort. Other features include a small pocket to keep electronics handy and a naturally-shaped foot box.

Top Brand: Kelty

Highly Rated
4.4/5 star rating from 10K+ customer ratings
Trending
10K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

From the manufacturer

Cosmic 20 Degree Sleeping Bag
Features
cosmic 2019 bag line up
cosmic 2019 stuff sack
Kelty Cosmic 2019 Kelty Cosmic Synthetic Kelty Cosmic Down Sleeping bag Kelty Catena Sleeping Bag Kelty Galactic Sleeping Bag
Kelty Cosmic 20 Degree Sleeping Bag Kelty Cosmic Synthetic Sleeping Bag Kelty Cosmic Down Sleeping Bag Kelty Catena Sleeping Bag Kelty Galactic Sleeping Bag
Customer Reviews
4.7 out of 5 stars
1,002
4.6 out of 5 stars
438
4.4 out of 5 stars
36
4.1 out of 5 stars
29
4.6 out of 5 stars
87
Temperature Rating (F) 20 Degree 20 Degree 20 Degree 30 Degree 30 Degree
Insulation 600 Fill DriDown Synthetic 550 Fill Down Synthetic 550 Fill Down
Shape Mummy Mummy Mummy Rectangle Rectangle
Features Comfort Hood, Anti-snag Zipper, Stuff Sack Included PFC-free DWR, Anti-snag Zipper, Stuff Sack Included Anti-snag Zipper, Draft Collar, Dual Slidder, Stuff Sack Included Anti-snag Zipper, Stuff Sack Included Cinch Cord, Anti-snag Zipper, Stuff Sack Included

Product Description

Simply put, Dridown represents the evolution of down insulation. Regular down is treated with a molecular-level polymer to create a hydrophobic finish on each individual down plume. This finish allows Drawdown to stay dry longer, loft better, and dry faster than regular down, keeping you warmer in any environment.

Product information

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Kelty Cosmic 20 Degree Down Sleeping Bag - Ultralight Backpacking Camping Sleeping Bag with Stuff Sack


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,002 global ratings

Customers say

Customers like the insulation, comfort, weight, and quality of the sleeping bag. They mention that it's plenty warm, comfortable, and lightweight. Some appreciate the mummy shape and the fact that it doesn't feel constricted. That said, opinions are mixed on the size.

AI-generated from the text of customer reviews

48 customers mention42 positive6 negative

Customers like the insulation of the sleeping bag. They mention that it keeps them warm, and pairs well with wool socks. They appreciate the design, good loft, and decent weight-to-warmth ratio. Overall, customers are satisfied with the insulation and value of the product.

"...it's light enough and compressible enough and most importantly warm enough...." Read more

"...The bag looks cool as hell and it's pretty toasty from first impressions (I zipped myself up in the apartment, not outside... yet.)..." Read more

"...The extra fill at the foot, paired with some wool socks, kept the toes toasty...." Read more

"...Apparently its pretty comfyTaking it outside it keeps you very warm...." Read more

38 customers mention29 positive9 negative

Customers like the weight of the sleeping bag. They mention that it's light enough, compact when packed, and warm at night.

"...it's not the lightest (the long weighing just under 3 pounds), it's light enough and compressible enough and most importantly warm enough...." Read more

"...It's light when packed in its sack...." Read more

"Super-compact when packed, fluffs up and super-warm at night. Really comfortable and easy to get oriented in when it's dark out." Read more

"...When I got in to it was so comfortable and it's very light weight...." Read more

36 customers mention35 positive1 negative

Customers like the comfort of the sleeping bag. They say it's cute, soft, and warm. They also mention that it doesn't feel constricted and they're able to turn on their side while inside. Some customers also say that the bag is a tight fit.

"...However, that's how I sleep and I was completely toasty and comfortable...." Read more

"...I'm 5'10" 200lbs (think dad bod) and it's fairly roomy. I don't feel constricted and I'm actually able to turn on my side while inside of it which..." Read more

"...Apparently its pretty comfyTaking it outside it keeps you very warm...." Read more

"...'s slightly roomier than a traditional mummy bag so it's more comfortable for side sleepers. I'm very happy with it...." Read more

31 customers mention31 positive0 negative

Customers are satisfied with the quality of the sleeping bag. For example they say it's a great purchase for the backpacker or seasoned camper, a solid bag for late fall camping, and a decent bag. They also mention that the bag held up well after many long distance hikes and wash after.

"...Taking it outside it keeps you very warm. The seems are protected and there's a nice little pocket for your phone...." Read more

"Decent Bag. Price is right. Bag is a bit tight for me at 6'1 170 but not uncomfortable. Not sure about the 20 degree thing...." Read more

"...Solid bag for late fall camping, but, this is not a 20-degree bag...I had this in 35 degree (F) weather at night at Indiana Dunes this past week,..." Read more

"...They have held up well after many long distance hikes and wash after wash...." Read more

20 customers mention20 positive0 negative

Customers appreciate the value of the sleeping bag. They mention that it is great value for money, and has great quality for price. Customers are also impressed with the repair warranty.

"...It's really frustrating.Old title: Good value for a quality bag, with a couple caveats..." Read more

"...The price is great as well so it's worth a shot at least, worst case scenario is that you return it" Read more

"...This bag was worth EVERY penny and more. The extra fill at the foot, paired with some wool socks, kept the toes toasty...." Read more

"...I'm very happy with it. It's definitely a great product at this price point - you'll have to spend a lot of $ to get something better...." Read more

9 customers mention9 positive0 negative

Customers like the appearance of the sleeping bag. They mention that it's cute, comfortable, and warm.

"...The bag looks cool as hell and it's pretty toasty from first impressions (I zipped myself up in the apartment, not outside... yet.)..." Read more

"...I like the design, good loft, and decent weight-to-warmth." Read more

"As others have said, it is a very nice, soft, comfortable bag. It is light weight and packs down nice...." Read more

"Luxurious and warm. Favorite sleeping bag I've owned." Read more

34 customers mention23 positive11 negative

Customers are mixed about the size of the sleeping bag. Some mention that it fits perfectly in their pack, is slightly roomier than a traditional mummy bag, and is more comfortable for side sleepers. However, others say that it's a little tight, runs tight across the chest area, and has zero air space.

"...It fit perfectly in my pack, and the 300 dollars I saved buying this one over one that is a pound lighter was able to be spent on a good pad/pillow..." Read more

"...It's lightweight, compresses down to the size of a large honeydew melon (I got a separate compression sack to pack it into) and warm(ish)...." Read more

"...is that the hood doesn't cinch tight around your face unless you have a giant head..." Read more

"...The bag fit perfectly - I am 5ft 4in and curvy at 160lbs.Highly Highly Recommend this bag." Read more

I’m 6’6” and it fits!
5 Stars
I’m 6’6” and it fits!
Great mummy bag. I’m 6’6” 240 (athletic build) and this fits me great. Even a little room at the feet. I can definitely stay warm and sleep comfortably in this!
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Top reviews from the United States

Reviewed in the United States on January 12, 2021
5 people found this helpful
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Reviewed in the United States on October 1, 2019
47 people found this helpful
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Reviewed in the United States on April 14, 2022
3 people found this helpful
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Top reviews from other countries

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Barnaby D.
5.0 out of 5 stars Provides decent comfort and warmth that is small and light enough for some 3-season backpacking.
Reviewed in Canada on February 27, 2023
Chris D
5.0 out of 5 stars Super super super sac de couchage !!
Reviewed in France on February 22, 2023
Max
5.0 out of 5 stars Guter Preis für das was man bekommt
Reviewed in Germany on January 17, 2023
One person found this helpful
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JaT
5.0 out of 5 stars Very comfy and warm. Great buy!
Reviewed in the United Kingdom on June 7, 2022
2 people found this helpful
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Tusse Lago
5.0 out of 5 stars Bra tresäsongers-sovsäck
Reviewed in Sweden on October 9, 2021
One person found this helpful
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