Kelty Cosmic Down 20 Degree Sleeping Bag Review

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After 3 years of steady use, I’m going to tell you what I like and what I don’t like about the Kelty Cosmic Down 20° sleeping bag, and if it’s worth buying! (Hint: Yes, I DO recommend it! 😉 )

I have personally owned the Kelty Cosmic Down 20° sleeping bag for over three years. My old model has served me incredibly well, but the newest model for 2021 is even better! They upgraded from 550 fill power down to 600 fill power down, all while keeping the price very reasonable. This bag has been with me for many many miles, and more nights than I can count. It has been to Canada, and all over the Eastern United States from multi-day backpacking trips to car-side camping trips.

What I like:

  • Price – This is a 20° F down bag that retail for under $140!
  • Weight – For the regular size bag, it weighs less than 2.5 pounds.
  • Packed Size – Kelty says it will pack down to 8″ x 13″, but I can tell you that I pack mine smaller than that!
  • Warmth – I love being super cozy when I’m sleeping, and this bag kept me toasty!
  • Women Specific Design – The Cosmic 20° DOES come in a women specific version!

Price This bag is hands down the best option for the money that I have ever used. It will give any other sleeping bag in the $140 price range a real run for the money! While many other sleeping bags in the 20° are either more bulky, more costly, or weighed significantly more.

Weight At only 2.5 pounds, this sleeping bag is way under what most bags weigh in the $140 price range. This is attributed to the 600 fill power down that is used to fluff up the trapezoidal baffles. Could some more weight be shaved off by eliminating the hood or using a lighter zipper? Sure. But if you are looking for strictly a super light bag, you will need to up your budget a couple hundred bucks.

Packed Size – Kelty states that this bag stuffs into a 8″x 13″ bag… which is correct. However, when backpacking I stuff it into a Zpacks medium-plus dry bag that measured only 7″ x 13″, but I could always get it down to 7″ x 11″ without issue. Even after being crammed into my backpack for days at a time, it always fluffed right up when pulled out of the stuff sack.

Warmth – Lets talk about warmth! I HATE being cold while I’m sleeping. In fact, I hate being cold at any time, but that is a story for another time. The Cosmic Down 20° is very warm. Never and I mean never did I wake up at night because I was cold. I’ve used this bag in temperatures down to 25° in the Virginia mountains without issue.

The only time I had an issue with being cold, is when I fell asleep with the zipper open. Zip up. Problem solved.

Women’s sizes? – Yes, the Cosmic Down 20° sleeping bag is available in a women specific version.

What I don’t like:

There aren’t any options from Kelty for a higher fill power option. Say, if you want a lighter bag and can afford a higher fill power down, you may opt for a 800 or 900 fill power option. Unfortunately, this isn’t available.

Do I recommend it?

Absolutely! Many different people will choose a sleeping bag based on different reasons, but the reason to choose this bag is because of the very low price point for such a high quality and pack-able bag.

Are there other temperature ratings available?

Yes. Kelty has Cosmic Down sleeping bag that range from 40° F all the way down to 0° F.

What is your favorite sleeping bag? Have you used the Cosmic Down? Let me know your thoughts in the comments below!

If you would like to see specific gear reviewed, drop me a line and I’ll be happy to review it!