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Kelty Cosmic Down 20 - Women's Review

Sleeping Bag for Women

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  • Currently 3.0/5
Overall avg rating 3.0 of 5 based on 1 review. Most recent review: August 4, 2015
Price:   $200 List | $135 online  —  Compare prices at 1 resellers
Pros:  Inexpensive for a down bag, 2 diameters of drawcords on chin and hood
Cons:  Heavy, less compressible and less warm than competitors
Manufacturer:   Kelty


The one word our testers would use to describe the Kelty Cosmic Down sleeping bag is "OK". This bag is just ok at everything. It is the least expensive down bag we tested, which makes it a good value for a budget conscious lady looking to purchase her first mummy-style down bag for a backpacking trip. It has low quality 550 fill duck down, that is heavier than would have liked, though the newest iteration of this classic bag now has hydrophobic down. We discovered that the Cosmic Down incorporates synthetic materials into its neck baffle and draft tube, which also contributes to its weight and bulk. It is very similar to other inexpensive down bags like the Kelty Ignite 20 - Women's and the Big Agnes Roxy Ann 15.

During our testing period, we ran into a woman on the John Muir Trail who was using the Kelty Cosmic Down. We polled her for her opinion, and she said "so far so good, good value for the money."

New Version Update - February 2016
Updated for 2016, the Kelty Cosmic Down 20 - Women's - New has experienced a few changes. Keep reading to find out more!

RELATED: Our complete review of sleeping bags - women's

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Analysis and Hands-on Test Findings

Review by:
Jessica Haist
Review Editor

Last Updated:

The New Version of the Kelty Cosmic Down 20 vs. The Older Version

Kelty has confirmed that the Kelty Cosmic Down 20 - Women's - New has been upgraded for 2016. In addition to being available in a new color and style, the materials and fabrics have also changed. The fill power has increased from 550 to 600 hydrophobic DriDown and the list price has decreased to $160 (from $200).

Check out the side-by-side comparison below, where you'll find the latest version on the left and the older version pictured on the right.
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Hands-On Review

This is a budget down bag that is very similar to the Kelty Ignite 20 - Women's, which is essentially another version of the Cosmic Down. The primary difference is that the Ignite has 600 fill down where the Cosmic has 550.

Performance Comparison

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The Cosmic Down is a relatively comfortable bag. Our 5'5 tester found it to fit her well, with room for wearing extra layers if needed.


The Kelty Cosmic Down bag is EN tested to 32F. We did not experience temperatures that cold while testing this bag, but we don't think we would want to. We felt like this bag was just warm enough when the temperatures were approaching the low forties.


Although we tested heavier bags, the Cosmic Down is by far the heaviest of the down bags tested. We were disappointed by how heavy this bag is because one of the great advantages of down is its high warmth-to-weight ratio. The Cosmic Down is 2lbs 8 oz, and we hoped at this weight it would be warmer and have a higher fill power.

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The Rab Neutrino 400 and the Kelty Cosmic down side by side. We think the Neutrino is much warmer with its 800 fill goose down, compared to the Cosmic Down's 550 fill duck down. The Neutrino is also much lighter.


This bag is relatively comfortable. It fits our 5'5" tester well, and she has a enough room to put on additional layers without it feeling too restrictive.

Packed Size

This bag compresses relatively well because it is down, but does not compress as well as the other down bags we tested, like the REI Joule. It comes with a small stuff sack, but not a compression sack.


Making the Cosmic Down smaller and narrower is the only attempt that Kelty makes at a women's specific feature. The zipper seems low quality, and has a tendency to catch on the shell material. We like the different thicknesses of drawcords for the hood and chin baffle so it is easy to tell them apart in the dark.


This bag is somewhat versatile. Paired with a high R-Value sleeping pad, it could be stretched from late spring to early fall use in warmer climates. The hydrophobic down allows it to be used in a slightly wider range of conditions. But it is heavier than the other down sleeping bags we tested, such as the Rab Neutrino 400 - Women's and we would not want to carry this with us on extended backpacking trips.

Best Application

This inexpensive bag works best car camping, during sleepovers, and on short backpacking trips.


At $199.95 the price tag on this hydrophobic down bag is hard to beat. It is a great value for a budget conscious camper who wants a down sleeping bag and needs a go-to bag for all of her camping needs.


We think this bag is overall pretty average. It is moderately comfortable and moderately warm, but doesn't stand out in any metric. We think it is an excellent choice for someone on a budget or new to backpacking and camping.

Other Versions

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Kelty Cosmic Down 20 - Women's
  • Cost - $200
  • EN Comfort Rating - 28*F
  • Weight - 2lbs 7oz
  • DriDown Hydrophobic Down
  • Good down sleeping bag for a budget

Click to enlarge
Cosmic Down 40
  • Cost - $100
  • Weight - 1 lb 12 oz
  • 550-fill hydrophobic DriDown
  • Comfortable but not as compressible
Jessica Haist

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OutdoorGearLab Member Reviews

Most recent review: August 4, 2015
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