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A premium backpacking bag for wet conditions, this 3-season mummy bag features REI's double-protection design, which uses both water-repellent down and waterproof/breathable fabric panels.

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Features

  • With a European Norm (EN) lower-limit rating of 19°F, this bag is suitable for 3-season use
  • REI double-protection design combines a polymer-coated down fill with waterproof/breathable fabric at the hood, sides and footbox, the areas likely to touch a damp tent wall
  • Water-repellent 700-fill-power duck down offers superior loft and warmth
  • Ripstop nylon shell also features a durable water repellent finish to further protect the down fill
  • Performance fit keeps weight low and thermal efficiency high; regular weighs just 1 lb., 13 oz.
  • REI in-the-round design puts vertical baffles in side walls to wrap you in warmth and create a better fit than bags that use only horizontal baffles
  • Contoured hood, insulated face muffler and full-length draft tube all work to keep warmth in
  • Differentiated hood and neck drawcords simplify adjustments
  • Most REI backpacking bags can be zipped to other REI backpacking bags; women's bags zip on the right, unisex on the left
  • The REI Igneo Sleeping Bag includes a nylon stuff sack and a 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
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. Our backpacking bags are rated for temperature according to an independent testing protocol: International Organization for Standardization (ISO) 23537. 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. For REI Co-op brand nongendered sleeping bags, we provide an overall temperature rating that falls between the Comfort and Lower Limit ratings.
View all REI Co-op Backpacking Sleeping Bags

Technical Specs

Best Use

Backpacking

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)

Ultralight

Yes

Shell

Ripstop nylon

Zipper Location

Left

Insulation Type

Down

Water-Resistant Down

Yes

Fill

700-fill duck down

Lining

Nylon taffeta

Sleeping Bag Shape

Mummy

Shoulder Girth (in.)

60 inches

Hip Girth (in.)

55 inches

Stuff Sack Size

8 x 17 inches

Stuff Sack Volume

14 liters

Gender

Unisex

Sustainability

Down certified to the Responsible Down Standard (RDS)

From a Climate Label Certified brand

REI Co-opREI co-op logo

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.

List of certifications which include The Climate Label certification,
        member informed certification and 100% satisfaction guarantee
Rei Coop brand gifREI Coop brand tent with a user inside wearing a REI Coop brand sweater
List of certifications which include The Climate Label certification,
        member informed certification and 100% satisfaction guarantee

Reviews
81 reviews with an average rating of 4.3 out of 5 stars

Ratings Snapshot

Product Rating

52 out of 61 (85%) reviewers recommend this product

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Most Helpful Favorable Review

5 reviews with an average rating of 5.0 out of 5 stars
Water proofing works
Elaine M
10 years ago
I recently had the "opportunity" to verify the waterproofing of this bag on a Labor Day weekend hike in the Wallowas. At approximately 7pm after hiking 8 miles in, the skies opened up. I learned that the stickiness on my rainfly was not caused by sap getting all over it from a previous trip -- the waterproof coating had delaminated. While the inch or so of rain that fell that night did not completely make its way into the tent, enough did to get the shell of my sleeping bag wet. I was able to stay dry inside the bag and it seemed to hold its loft well. I don't plan to re-run this test, but thought others might benefit from the information.
Elaine M
Portland, OR, United States
150 people found this review helpful

Most Helpful Critical Review

5 reviews with an average rating of 2.0 out of 5 stars
do not use below 40 degrees
David Korty
11 years ago
I have used this bag on two occasions now, once during a 38 degree night in which case I had to use a second bag on top of this one to stay warm and again more recently on a 25 degree night where there was no option for adding a second bag on top. It was very, very cold. I even had one of those bag liners and was wearing long johns with fleece pants a warm sweater and a hooded down parka with a wool hat! It just doesn't feel like there is enough down inside the walls of the bag. My friend was sleeping in a Big Agnes and was warm and toasty. Perhaps the Igneo is best used on slightly cool nights but DO NOT take this bag into high elevations where the temps will be in the 30's and below. And I will also say that I am a person who does not chill easily and usually run on the warm side when sleeping.
David Korty
CA
42 people found this review helpful

Customer Images

Elaine M
Portland, OR, United States
Rated 5.0 out of 5 stars

Water proofing works

10 years ago

I recently had the "opportunity" to verify the waterproofing of this bag on a Labor Day weekend hike in the Wallowas. At approximately 7pm after hiking 8 miles in, the skies opened up. I learned that the stickiness on my rainfly was not caused by sap getting all over it from a previous trip -- the waterproof coating had delaminated. While the inch or so of rain that fell that night did not completely make its way into the tent, enough did to get the shell of my sleeping bag wet. I was able to stay dry inside the bag and it seemed to hold its loft well. I don't plan to re-run this test, but thought others might benefit from the information.

Yes , I recommend this product
Helpful?
ColoradoHunter
Colorado Springs, CO, United States
Rated 4.0 out of 5 stars

Not bad, but a little tight.

10 years ago

I bought the long and took it on one backpacking trip before returning it. It was plenty warm (maybe a little too warm) in the hammock with a pad down to about 40 degrees (I should have vented it more), but it was too tight in the legs for me to bring one knee up the way I like. The bag also leaked a little down (very little, but some). Overall, it's a good quality, warm bag that packs down really small and light. At 5'11" and 230#, it was just a little too snug for me in the hammock. The Kelty SB20 from REI was a better fit for me. That's why we have so many different manufacturers - everyone is different. Thank you, REI, for the great return policy!

Yes , I recommend this product
Helpful?
REIdaho
Idaho, United States
Rated 5.0 out of 5 stars

Warm bag saved my skin in mountains

9 years ago

I bought this bag at an REI Garage Sale and was initially struck how well it was put together. The first night in the Sawtooth Mountains during mid June, the skies decided to dump snow and drop the temps to below 20 degrees. The bag kept me warm, and with several layers on, could keep me comfortable down to the 10's. Some down does leak from the bag (that's the price for light weigh down) but overall it was very happy with the product. BTW, I am 5' 11" and have a LONG bag which I strongly recommend. It allowed for me to slide deeper into the bag on the cold night and cinch the hood. If I was in a regular sized one, I would have not been happy.

Helpful?
John 623
Chicago, IL
Rated 5.0 out of 5 stars

Great bag!

9 years ago

I'll admit it: I was skeptical such a lightweight, compressible bag would be as warm as advertised. However, the the night I brought it home it was 23 degrees outside - so I unrolled it on the deck, put on a T-shirt and shorts, and gave it a try. I awoke several hours later, completely warm and comfortable. It's my first mummy bag, so the limited range of motion of my legs took some getting used to - but it didn't take too many nights to adapt, and the warmth of the design makes it worthwhile. If you need to scrimp on expenses, I get it - but try to do that with something other than your bag. This one's worth the money!

Helpful?
Kiisu
Santa Barbara, CA, United States
Rated 5.0 out of 5 stars

Great for sleeping in the rain

10 years ago

I've had this bag for three years now. It's been everywhere from the Sierra Nevada ranges, Dealth Valley in the snow and rain, all through the Colorado Plateau, backpacking in Iceland, and much more. I've slept comfortably without a tent in this bag (with some wool layers on!) and woken up next to a frozen solid Nalgene bottle. I've slept in 60 F while just using this bag as a blanket. Sleeping without a tent in Dealth Valley I woke up to pouring rain, but remained completely dry inside my bag. I can't really imagine there being a sleeping bag that works better as an all around bag. It's pretty much perfect.

Yes , I recommend this product
Helpful?
Captain Curt
Seattle, WA, United States
Rated 5.0 out of 5 stars

Great bag under 2 lbs

11 years ago

I love this bag. It's warm, it's light, and it has a great amount of loft. When used with my X-therm pad, it can be a little too warm, but that's better than too cold. I managed to snag one of the last bags from the previous generation that uses 800 goose down rather than the 700 duck fill that's now advertised. Other thoughts: There may be a spec discrepancy here: How can a 700 duck bag have the same EN rating as the previous 800 goose bag without adding weight?

Yes , I recommend this product
Helpful?
Gingerman515
RVA
Rated 5.0 out of 5 stars

Excellent value

11 years ago

I bought this bag after realizing I needed a real cold weather bag and this one works well from about 20 (as specified) with long underwear to 50 degrees with it partially unzipped. On our recent trip through the Gila Wilderness in early May my wife used it and was very comfortable. It packs down well and is really light for the money. Getting closer to one lb with this temp rating means a really big step up in price. This bags covers my backpacking needs for a great price.

Yes , I recommend this product
Helpful?
travislmf
Reno, Nevada
Rated 5.0 out of 5 stars

The Perfect Sleeping Bag

8 years ago

I used this bag for 21 days while on a modified John Muir Trail through hike. It was perfect. The bag is not even two pounds but has all the warmth I ever needed. I sleep with the bag open like a quilt and was never cold inside despite the temperatures outside dropping well below 30 degrees a few nights. When you do need to use the zippers they function smoothly, never snagging the fabric. I bought the Joule as well for my wife and she loved it. We never needed to zip them together but the knowledge that they could made her feel good in case things got really cold. She is a cold sleeper but never felt it inside her bag.

Yes , I recommend this product
Helpful?
Tim S K
Salt Lake City, UT, United States
Rated 5.0 out of 5 stars

Great 3 season bag

8 years ago

Bought this bag before my JMT through hike and it was one of my favorite pieces of gear. Went in August/September. Spent several nights above 10K, temps dropped below freezing and the bag was warm and comfy. Slept without a tent and would wake with frost on the bag but it always did it's job and was durable. Best part is at 1lb 13oz it's really light and shaved off a pound off my last bag at the same temp rating. Highly compressible, love it. Only real complaint is that it's slightly tight but was able to turn and spread my legs enough to get comfy every night. 5'11 and got the regular.

Yes , I recommend this product
Helpful?
blilly
Virginia, United States
Rated 5.0 out of 5 stars

Great Bag. Lightweight, Warm and packable.

10 years ago

Bought this last fall to find a nice middle ground between my summer and winter bags, and it's ended up being my primary for almost everything. First off, the bag is super light weight considering how warm it is and w/ a compression sack it packs down to next to nothing. I've used the igneo and been extremely comfortable in everything from 50 degree weather (unzipped open with a microfiber sheet) all the way down to zero degrees (didn't even need to break out the cold weather liner that i brought along). Put it away in the storage bag it comes with, make sure to compliment it with all the other cold weather sleeping tips/gear, keep it dry/protected, and this bag will become one of your favorite pieces of gear. I guess there are some $800 bags that shave some ounces but in terms of overall value and quality, I've yet to find a better bag. Only problem is i should have bought a second one b/c my girlfriend keeps wanting to trade bags.

Yes , I recommend this product
Helpful?
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