Kelty Cosmic Down 20 Backpacking Sleeping Bag

As far as sleeping bags go – especially mummy bags filled with down – you are almost always looking at a steep price tag that is too much for the casual climber or overnight camper. But the Kelty Cosmic Down 20 aims to change all of that the moment you slip inside of it.

Kelty Cosmic Down 20 Backpacking Sleeping Bag Review

While most civilians would think you are bit nuts or maybe even touched in the head to even consider buying a sleeping bag that cost $100, all real outdoorsman and backpackers would think the exact same thing, but for a totally different reason. With the overwhelming majority of quality bags costing well above $300, most people that are serious about getting out into the woods and spending a couple nights are more than a little bit leery about a bargain price bag. And that all changes the moment that they try it after reading our the Kelty Cosmic Down 20 review.

Kelty Cosmic Down 20 Review — First Impressions

Designed not to be the best sleeping bag in the entire world, nor making any claims of using the latest and greatest materials in its construction, the Kelty Cosmic Down 20 is the hands-down titan of budget based bags. Offering a three-quarter length zipper, pretty solid draft and wind resistance, a reasonable true to life down filling that keeps out the chill without overheating, the Kelty Cosmic Down 20 is deathly a bag to pay attention to if you’re serious about getting out without breaking the bank. While not really anything to shout from the mountain tops, most people looking for the kind of sleeping bag that stays out of mind. After all, going to be spending all of your time in your sleeping bag asleep anyway, and any bag you have to think too much about is probably not worth the money you invest in anyways.

Kelty Cosmic Down 20 Video Review

Premium value

The one thing that you have to take away from the Kelty Cosmic Down 20 is a simple fact that you will not find a better sleeping bag even close to this sticker price. Where most bags purpose built for the outdoors and serious backpackers are well above the $300-$500 range, you’ll be able to save a significant amount of money while sacrificing a minimum amount of performance, and will be able to use that savings on more essential gear.

Pretty comfortable

While you would be beyond hard-pressed to find anyone that thought that this bag was a real looker, the Kelty Cosmic Down 20 more than makes up for things the comfort department. A 550 fill real deal down bag, you’ll be able to enjoy real heat and comfort you expect on even the coldest nights. With a temperature rating of 20°F, you can reasonably expect this to be able more than adequate three season bag, though it might get more than a bit hot in the summer. The other main feature of the comfort comes in the simple fact that you will have to lug and tell a massive sleeping bag around. While not specifically and purpose built to be an ultra-light sleeping bag, weighing in at a little over 2 pounds the Kelty Cosmic Down 20 is nothing too terribly difficult to manage. It compresses easily enough to stowaway without taking up precious space in your go bag, while still giving you reliable comfort that you deserve.

Kelty Cosmic Down 20 Specs

Best use Backpacking
EN lower limit? (rating for men) Unavailable
EN comfort? (rating for women) Unavailable
Temperature rating? (F) 20 degrees Fahrenheit
Temperature rating? (C) -7 degrees Celsius
Weight 2 lbs. 8 oz.
Weight metric 1.1 kilograms
Shell Polyester
Insulation type Down
Fill 550-fill down
Fill weight 20 ounces
Lining Polyester taffeta
Sleeping bag shape Mummy
Fits up to (in.) 72 inches
Shoulder girth? 62 inches
Hip girth? Unavailable
Stuff sack size? 8 x 14 inches
Stuff sack volume 11.5 liters
Gender Unisex
MSRP: $149.95


If you’re looking for the latest and greatest in sleeping bag technology, you’ll have to look somewhere other than the Kelty Cosmic Down 20. Designed to be the ultra-utilitarian package, this is the kind of sleeping bag that you can lean on and trust when you don’t have the funds with a budget to blow $400-$500 a new sleeping bag. The peace of mind that comes from knowing that you have a reliable product to keep you warm and comfortable at night (while offering the much loved mummy package) without having to break the bank is untouchable anywhere else on the market. The last thing you want to do is invest in a bag has always on your mind, and while you probably won’t win any fashion awards or become the envy of any backpackers you meet on the trail through the look of your new bag, you’ll always be comfortable and warm when it’s time to rest up for the road ahead.

Written by Stan Tyan