Kelty

Cosmic 20 Series

TL;DR: Budget king; great for beginners, but heavier and bulkier.

Overall

#5 in

Outdoor Sleeping Bags

according to Reddit Icon Reddit

Sentiment score73% positive
19
4
3
Last updated: Apr 17, 2026

Reddit Reviews

Reddit Iconajhejunk
about 2 months ago

I froze my ass off with the Kelty Cosmic in 2024

Reddit IconAN0NY_MOU5E
7 months ago

I have the kelty cosmic down 20 and it it fantastic. Also about half the price of the ones you mentioned.

Reddit IconBehindTheTreeline
6 months ago

Gnarly! Sounds like some top tier "type B" fun. Early on in backpacking, after several uncomfortable, borderline worrisome nights sleep in my 20°f Kelty bag I learned the advertised temperature ratings of sleeping bags are actually the "survival rating,", meaning you won't lose any appendages to the elements. The comfort rating is always significantly warmer than the survival rating and you often have to research equipment in advance to find thst figure. I'm PNW-based, and personally, fall-winter I use a rei magma down 15 bag & neoair xtherm pad. I might not ook like Jeremiah Johnson all bundled up but I sleep like a baby. Risking death chasing the bushcraft aesthetic in a cold, damp environment isn't worth it if you lack the ability or materials to craft an adequate sleep system.

Reddit Iconcantdrawastickman
12 months ago

I picked up a Kelty cosmic down a number of years ago. Fairly basic but it was down and a decent weight.

Reddit IconComprehensiveAge9950
about 2 months ago

If its of any interest I have a kelty cosmic 20 thats only ever been used in my roof top tent. I can send it to ya if you pay shipping. If it works for ya you can use it for the hike or ill just sell it to ya cheap. Edit to add im in wnc in Waynesville

Reddit Iconcwcoleman
4 months ago

Can you add more specific details? You have this labeled as 'travel' - but ask about camping gear. I assume you are asking about the 'wilderness' type of backpacking - right? What is the low temps you plan to sleep in? You say no snow - but 'colder temps' - a number would help. What is your budget? Do you have $500 to spend? $5000? You say 'wreck bank account - but everyone's bank account is different size. How old are you? Man or Woman? (many packs and sleeping bags are gendered) Do you already have a good sleeping pad? This is also critical to a good / warm night sleep. Do you already have a tent? Sure - Kelty is a find budget getting started brand. They make an okay Cosmic down sleeping bag that's popular for wilderness backpacking. I wouldn't go for their backpacks really. Here are some default recommendations from Amazon: * [https://www.amazon.com/Kelty-Sleeping-Backpacking-Recycled-PFAS-free/dp/B0CSPFW5Q1](https://www.amazon.com/Kelty-Sleeping-Backpacking-Recycled-PFAS-free/dp/B0CSPFW5Q1) * [https://www.amazon.com/Osprey-Atmos-Backpacking-Backpack-X-Large/dp/B09JXQDZG5](https://www.amazon.com/Osprey-Atmos-Backpacking-Backpack-X-Large/dp/B09JXQDZG5) * [https://www.amazon.com/Therm-Rest-Original-Ultralight-Camping/dp/B00453NA1E](https://www.amazon.com/Therm-Rest-Original-Ultralight-Camping/dp/B00453NA1E) * [https://www.amazon.com/Therm-Rest-Ultralight-Backpacking-Sleeping/dp/B0CS4NHPVP](https://www.amazon.com/Therm-Rest-Ultralight-Backpacking-Sleeping/dp/B0CS4NHPVP)

Reddit IconDuckin_Tundra
9 months ago

Kelly cosmic down 20f, not under 80$ tho, if your short you can get the women’s one at backcountry for like 110$.

Reddit Iconelevatedtoast
9 months ago

Also have this Kelty bag and was pleased with its performance this spring. I do have the eco version of it as it was at sierra for a solid deal. With temps down in the low 40’s upper 30’s, I was warm with layers on.

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