Sleeping Bag Buying Guide: How to Choose the Right One for Camping
Kelty Cosmic Down 20 Sleeping Bag - Men's
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The Cosmic Down 20 sleeping bag is insulated with water-resistant DriDown™ that resists moisture, has exceptional loft and compresses down small, making it a great bag for 3-season backpacking.
Shop newer versionKey Details
Fill
84% 600-fill DriDown/16% polyester fiber
Temperature Rating (F)
19 degrees (F)
- Ripsop polyester creates a smooth yet durable shell; polyester taffeta lining breathes for comfort and feels great against skin
- 600-fill-power DriDown has a water-resistant finish that allows down insulation to resist moisture, dry fast and maintain loft
- 60 in. dual-slider locking zipper with antisnag design and draft tube to hold in warmth
- Thermal comfort hood has drawcords of differing widths at head and neck for easy identification and adjustment in the dark
- Full draft collar drapes comfortably over neck and shoulders, sealing out drafts
- Off-set construction provides maximum warmth without cold spots
- Natural-fit footbox provides plenty of room so feet don't feel scrunched
- Stuff sack included
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Kelty Camping Sleeping BagsEach bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Camping |
|---|---|
| Tested Lower Limit | 19 degrees (F) - EN |
| Tested Comfort | 30 degrees (F) - EN |
| Temperature Rating (F) | 19 degrees (F) |
| Temperature Rating (C) | -7 degrees (C) |
| Shell | 50-denier ripstop polyester |
| Zipper Location | Right |
| Insulation Type | Down / Synthetic Blend |
| Water-Resistant Down | Yes |
| Fill | 84% 600-fill DriDown/16% polyester fiber |
| Lining | 50-denier polyester taffeta |
| Sleeping Bag Shape | Mummy |
| Gender | Men's |
Buying Advice
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Most Helpful Favorable Review
Great price to weight, but sleeps cold
Steve17919 years ago
I bought 4 of these bags for backpacking because of the great prices and positive reviews. They are very good bags in terms of construction, easy of use and packability. However, all of us sleep cold in them relative to the 20F rating. We have about 30-40 nights in them in the last 2 years.
The coldest night for all of us was a windy 24F night in Death Valley in January ironically enough. All of us piled on our layers and just get warm. My wife and daughters have since added bag liners and upgraded their pads to thick Big Agnes Q-Core which has helped. Last weekend we were in mid to low 30's in the Sierras and again, we all slept cooler than we would have liked. From my experience, the "comfort" rating for women should be closer to 45F and 40F for men.
We are planning a JMT trek this fall and I'm now shopping for something better for my wife and daughters. Cold nights can zap enthusiasm too quickly!
Steve1791
Northern CA
79 people found this review helpful
Most Helpful Critical Review
Great price to weight, but sleeps cold
Steve17919 years ago
I bought 4 of these bags for backpacking because of the great prices and positive reviews. They are very good bags in terms of construction, easy of use and packability. However, all of us sleep cold in them relative to the 20F rating. We have about 30-40 nights in them in the last 2 years.
The coldest night for all of us was a windy 24F night in Death Valley in January ironically enough. All of us piled on our layers and just get warm. My wife and daughters have since added bag liners and upgraded their pads to thick Big Agnes Q-Core which has helped. Last weekend we were in mid to low 30's in the Sierras and again, we all slept cooler than we would have liked. From my experience, the "comfort" rating for women should be closer to 45F and 40F for men.
We are planning a JMT trek this fall and I'm now shopping for something better for my wife and daughters. Cold nights can zap enthusiasm too quickly!
Steve1791
Northern CA
79 people found this review helpful
Firetamer
Farmyard smell
8 years ago
I was pleased at first with the bag, using it for firefighting camp. When I tried to wash it, following instructions carefully, the slight smell of down grew into a sickening smell which never went away. Cleaned it a number of times and aired it for days but to no avail. Reading online suggestions, I learned that the only way to prevent this farmyard stink is to buy a better quality product in which the down has been properly cleaned before the bag was made. Right now, I can't even have this bag airing in a room as it is nauseating, none-the-less put my head into it on a cold night.
No, I do not recommend this product
Saluki08
St. Louis, MO, United States
Great entry level down bag
7 years ago
This is not the best sleeping bag on the market. However when taking into account the price, it is awesome. I know I could spend $500 and get a more packable, lighter, and warmer bag. But for the moderate backpacking I do this is perfect. I only go on one or two night trips. It packs really well. I have used it down to 25 degrees, and was fine, but that would probably be the limit for me, I am a warm sleeper. I have wide shoulders and upper body and I still fit in it comfortably. If you are looking for an entry level backpacking or camping bag, this is perfect.
Yes , I recommend this product
Irish
Arizona, United States
Cold Feet
7 years ago
I purchased this sleeping bag based off of cost and what i needed it to do. The bag itself is OK quality good zippers but i cant see how it would keep you warm in 20 degrees. I took it out last week for the first time on my hunting trip in Arizona , Its been warm here about 11 above normal and last week was no exception. Lows at night were high 30'3 to mid 40's. The bag did well enough in these conditions apart from my feet , they got cold and never warmed up with just the bag alone. I would never dream of using this in anything lower than 30 it just wouldnt work , I run hot..
No, I do not recommend this product
Steve1791
Northern CA
Great price to weight, but sleeps cold
9 years ago
I bought 4 of these bags for backpacking because of the great prices and positive reviews. They are very good bags in terms of construction, easy of use and packability. However, all of us sleep cold in them relative to the 20F rating. We have about 30-40 nights in them in the last 2 years. The coldest night for all of us was a windy 24F night in Death Valley in January ironically enough. All of us piled on our layers and just get warm. My wife and daughters have since added bag liners and upgraded their pads to thick Big Agnes Q-Core which has helped. Last weekend we were in mid to low 30's in the Sierras and again, we all slept cooler than we would have liked. From my experience, the "comfort" rating for women should be closer to 45F and 40F for men. We are planning a JMT trek this fall and I'm now shopping for something better for my wife and daughters. Cold nights can zap enthusiasm too quickly!
Yes , I recommend this product
twinkle
Lubbock, TX, United States
Amazing Value!
7 years ago
I purchased the bag for a philmont trek and I could not be happier with how it performed out in the back country! I slept kinda warm at base camp, 6,500 ft, but I was cozy on the trail at all altitudes up to 10,400 ft. I was worried about buying the men's version instead of the women's, but I didn't notice any big differences. The bag was warm, roomy and comfortable. I've never slept well in mummy bags because I move around too much, but I never got tangled in the bag. Overall, it is a great bag that will perform well without breaking the bank!
Yes , I recommend this product
Evan McBroom
Carmel, IN
Superb performance I could afford
9 years ago
I purchased this bag for a early spring trip on The Knobstone Trail in Southern Indiana. My previous bag didn't perform well below 40 degrees, and we were expecting night time temps as low as mid-20s. We were backpacking 50 miles in 4 days with a total elevation gain of 10,500 (yes, in Indiana...up and down and up and down, etc). Performance to mid 20s was important and I needed it to be relatively lightweight. This bag exceeded my expectations. I'm 5'8" and 200 pounds. The bag was comfortable with enough room to move while hammock camping. I also had an underquilt from another manufacturer. Zipper worked well (have to zip carefully to keep it moving but it never got all jammed up). Collar and hood adjustments worked great too. We had nights of 25, 30 and 40 degrees. Worked well in all, I just adjusted my base layers and sock choices. NOTE: It would be even more awesome if it would have come with a compression sack instead of a stuff sack, but it was small enough and I'm sure that helps keep the price down. The stuff sack and back fit in my pack fine.
Brian_Miller
Columbus, OH
Kelty Cosmic Down 20 Review
9 years ago
This Bag is pretty impressive so far. Slept in mid 30's in a tent. On a 1 1/2" Thermorest, with a base layer top and bottom, and a fleece on top. Woke up 2 hrs in sweating. This thing packs down amazingly well, I can get it and a small pillow in to the bottom compartment of my 55 liter pack. Excited to see how low I can go. Planning on making a fleece bag liner for it and hoping to get 5-10 more degrees. A great bag!!!
Mgappa
South Lake Tahoe, CA, United States
Lives up to Specs
9 years ago
Love this bag so far. Haven't used below 35, but did its job to this level. I researched bags for months and settled on this one due to the larger shoulder and hip size. I an a side sleeper and move around a lot. My worries of feeling to confined while rolling around were not an issue at all with this bag. Only gripe is the fact it didn't come with a compression bag.
Yes , I recommend this product
Tyler740
Snow Camping
9 years ago
I stayed very warm while camping in snow and 20 degree nights. One night in a shelter and another in a tent. very warm both nights.
Solve4x
Medina, NY,
Lucky find
7 years ago
I wasn't looking for a great new sleeping bag. I was on my way to the. St. Regis canoe area in the Adirondacks with my old bulky LL Bean bag. I'm not getting any younger or stronger, and it was "now or probably never" for a trip with long portages. Gear size and weight was a major concern. We stopped at the gear store on the way...cause you have to. I always walk past the high end bags with the high end prices and say yeah right. This lonely little Kelty was the last of its kind on the shelf, and on sale to boot. I was feeling no pain, on vacation and all, so I made the rare spontaneous big ticket purchase. It turned out to be the perfect sleeping bag...small and light, stayed warm in the 30-40 degree dampness. It made my pack more comfortable to to the reduced bulk. I feel like I tested it under tough conditions and it did great. I plan to add a liner for those colder days and to keep it clean. Happy camping!
Yes , I recommend this product
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