How to Choose Sleeping Bags for Backpacking
REI Co-op Kilo Expedition -20 Sleeping Bag - Regular
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With smart goose down insulation distribution and a waterproof shell, this cold-weather bag is warm, weatherproof and very compressible.
Shop similar productsKey Details
Fill
Bottom:700/top: 800-fill goose down
Temperature Rating (F)
-20 degrees Fahrenheit
- Goose down is efficiently distributed for maximum warmth and comfort—800-fill-power goose down on top and 700-fill-power goose down underneath
- Ultralight nylon shell features Gelanots® waterproof, breathable coating for superior weather protection
- Vertical Baffle construction lets the goose down remain fully lofted and keeps it from shifting and migrating, preventing cold spots
- Vertical Baffles also prevent down from shifting to the sides and keep more down on top of the bag where it keeps you warmer
- Exclusive dual Regulator zippers adjust temperature as needed—fully close both zippers to increase warmth, open inner zipper to decrease warmth
- Multi-chambered hood and contoured, insulated draft collar seal in heat; trapezoidal foot box increases comfort and provides more space
- Relaxed fit from hip to knees increases comfort by providing space to move around in
- Includes nylon stuff sack and large cotton storage bag
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
Imported.
View all REI Co-op Backpacking Sleeping Bags| Best Use | Backpacking |
|---|---|
| Temperature Rating (F) | -20 degrees Fahrenheit |
| Temperature Rating (C) | -29 degrees Celsius |
| Shell | Nylon |
| Insulation Type | Down |
| Fill | Bottom:700/top: 800-fill goose down |
| Fill Weight | Unavailable |
| Lining | Polyester taffeta |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | 72 inches |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | 60 inches |
| Stuff Sack Size | 9 x 21 inches |
| Gender | Unisex |
| Sustainability | From a Climate Label Certified brand |
Buying Advice
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.
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MayorPuffinStuff
Blairsville, GA
Thumbs up on this bag
15 years ago
I love this bag. I bought mine new in '05, and have used it more than 20 times. Mostly in weather below 10. -11 is the coldest i have tested the bag, and felt i could stay warm at the -20 rating. I am a cold sleeper, so that is saying a lot. The only bad thing for me is that i cannot close the inner zipper because I'm 6'0 200lbs. It's just too tight. I would rather have a draft tube. Still, it did not interfere with the preformance of the bag. I like the feel of the bag, and the hood is large and comfy. The price is right compared to other reputable brands with the same features such as 800 fill down. I would definately recommend it to anyone and everyone who is going below zero.
Yes , I recommend this product
TTTG
Elizabeth City, North Carolina
Great bag
16 years ago
I have been down to -10 deg. with this bag and stayed warm, and I was in a hammock! If I could change anything, I would have a left hand zipper.
Yes , I recommend this product
TheObserver
NYC
I replaced my Western Mountaineering Bag
16 years ago
Great bag! Its so warm! I was suffering from cold at nights with my Western Mountaineering bag. It looked great on paper, being light and rated at the very low temperature. But it turned out to be over rated. The shell tour easily and it wasn't very water repellent. Hard to imagine considering the huge price Western Mountaineering charges. The Kilo is truly made to be a expedition bag. The insulation and protection is great. The price is great.
Yes , I recommend this product
buildgreen
Austin, TX
Sweet Bag
17 years ago
I bought this bag for a 3 month expedition in Patagonia. After much research I decided this bag was the one and I do not regret my decision. This bag was roomy, warm, and light. I was comfortably warm at 0 degrees and paired with silk liner warm well below that. I would not recommend this bag for temperatures above freezing because it is so well insulated you get really hot. However, having said that, the two zipper design allows great regulation of warmth. I love this bag. Oh, not recommended for wet weather, but that goes for any down bag.
Yes , I recommend this product
Echo5Kilo
Minnesota
Kilo excels in all conditions
17 years ago
I've used this bag in a multitude of scenarios and temperatures. It works best when it's colder, but with the multi-zipper system, you have plenty of ventilation flexability. Great packer, and partnered with a good pad, this bag works well in any cold-weather backpacking environment. Note: be careful around extreme wet conditions.
Yes , I recommend this product
dan_ny
new york
A great sleeping bag!!
17 years ago
I used this bag on a 3 night Presidential Traverse March 4-7 of 2008 with temps dipping below 0 and was utterly warm. Roomy enough to stash my gloves, shell jacket, soft shell jacket, and myself in a down parka and still zip up nice and cozy. Only complaint, my feet got a little cold .... otherwise its a great bag.
Yes , I recommend this product
McDaniel
Oklahoma City, OK
Worth every penny
17 years ago
I was looking for a very lightweight bag that could be used during backpacking in the mountains. At first I was hesitant because I'm a college student and fit the typical poor college student profile, but the little extra I spent was very worth it for the [lack of] weight. The only thing that I don't like about the bag is the zipper, although it is much better than previous bags that I have owned. Occasionally the pull gets stuck in the zipper teeth.
Yes , I recommend this product
Im41ether
San Jose, CA
Not warm enough but functional
15 years ago
After lots of research, i was about to buy the Marmot -40 bag b/c i am a way cold sleeper. However the folks [...] said that -40 would be too warm. Well, my advice to everyone is trust your own advice. I took this REI -20 bag to Yosemite last weekend Nov 20th. The temp in the valley at night was around 32F and i was fine with the outer zipper zipped and the inner zipper unzipped. However, the next day up at upper Yosemite falls trail around 7000ft elevation the temp at night got down to around 17F and at first i had only the outer zipper zipped and i was freezing, then i zipped up the inner zipper and was instantly warm until i woke up in the middle of the night FREEZING again and could not sleep all night because i was soo cold, mind you i had two pair of socks on, fleece bottoms, three turtle necks and a down jacket, and a wool cap...How could this be possible i asked myself? I mean it is suppose to be a -20 bag.
No, I do not recommend this product
Ronny
Littleton, Colorado
I love my REI Kilo !
17 years ago
I have used this bag in almost all conditions, and I can't say enough about it. My friends also rave about it and some have even bought one of their own. I bought mine about 4 years ago, and this has been one of my best purchases ever. I highly reccomend it!
Yes , I recommend this product
quico
Spain
great sleeping bag
17 years ago
First, Sorry for my bad English. Great sleeping bag, To improve this I think need more down o fiber on feet and more space on feet. Between the zippers one thrmic lappel because when the interior zipper it's open cold pass for the first zipp.[...]
Yes , I recommend this product
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