How to Choose Sleeping Bags for Backpacking
REI Co-op Serrana Sleeping Bag - Women's
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This 3-season backpacking sleeping bag features water-repellent down and a women-specific design with a relaxed shoulder-to-hip cut that works well for multiposition sleepers
Shop similar productsKey Details
Fill
600-fill duck down
Temperature Rating (F)
19 degrees (F)
- With a European Norm (EN) comfort rating of 25°F, this bag is suitable for 3-season use
- Designed to fit a woman's body, this bag offers increased room at hips, decreased room at shoulders and extra insulation in critical heat-loss areas
- Water-repellent 600-fill-power duck down offers excellent loft and warmth in damp conditions
- Ripstop nylon shell also features a durable water repellent finish to further protect the down fill
- Relaxed shoulder-to-hip cut works well for multiposition sleepers
- Contoured hood, insulated face muffler and full-length draft tube all work to keep warmth in
- Differentiated hood and neck drawcords simplify adjustments; antisnag zipper works smoothly
- Bag has a stash pocket under the collar
- Pad loops let you strap the bag to your sleeping pad (straps and pad not included)
- Most REI backpacking bags can be zipped to other REI backpacking bags; women's bags zip on the right, unisex on the left
- The women's REI Serrana 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 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. For REI Co-op brand nongendered sleeping bags, we provide an overall temperature rating that falls between the Comfort and Lower Limit ratings.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 13 degrees (F) - EN |
| Tested Comfort | 25 degrees (F) - EN |
| Temperature Rating (F) | 19 degrees (F) |
| Temperature Rating (C) | -7 degrees (C) |
| Shell | Ripstop nylon |
| Zipper Location | Right |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 600-fill duck down |
| Lining | Polyester taffeta |
| Sleeping Bag Shape | Mummy |
| Shoulder Girth (in.) | 60 inches |
| Hip Girth (in.) | 60 inches |
| Stuff Sack Size | 8.5 x 21 inches |
| Stuff Sack Volume | 20 liters |
| Gender | Women's |
| Sustainability | Down certified to the Responsible Down Standard (RDS) 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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Most Helpful Favorable Review
Slept through 8 deg F (-13 deg C)
Trail Bails10 years ago
I have had this bag for 3 years and I am very happy with its durability, weight, and size. Recently, it passed the test of extremes. I brought this on a 3 day New Year's eve backpacking trip in the Needles (Canyonlands Utah) after a snow. The low was 8 deg F (-13 C). With a good sleeping pad (high R value), a cool max liner, and hand warmers in the socks for added comfort, I slept quite well, and I get cold easily. For me that means that it was a good decision to buy a bag that was lighter and smaller for carrying less when summer backpacking, because this bag can still handle winter and swing season temperatures.
Trail Bails
Denver, CO, United States
29 people found this review helpful
Most Helpful Critical Review
Ruined after one wash
kapope9 years ago
I recently purchased this sleeping bag for a camping trip I had last weekend, and I was so excited about it! The bag was amazing during my trip, and kept me warm all night. I have no complaints about the function of the bag. The problem is that when I got home and washed it (it was a dirty camping trip), it came out of the washer ruined. I washed it in a front-loading washer, with the recommended Nikwax Down cleaner, and on the handwash setting. When it came out of the washer it had about five holes spread out across it, and it lost a good amount of down. I am beyond bummed and disappointed. So while I would definitely recommend it for its function as a sleeping bag, you won't be able to wash it without fear of destroying your brand new, $230 sleeping bag. Sigh.
kapope
Redlands, CA
7 people found this review helpful
Trail Bails
Denver, CO, United States
Slept through 8 deg F (-13 deg C)
10 years ago
I have had this bag for 3 years and I am very happy with its durability, weight, and size. Recently, it passed the test of extremes. I brought this on a 3 day New Year's eve backpacking trip in the Needles (Canyonlands Utah) after a snow. The low was 8 deg F (-13 C). With a good sleeping pad (high R value), a cool max liner, and hand warmers in the socks for added comfort, I slept quite well, and I get cold easily. For me that means that it was a good decision to buy a bag that was lighter and smaller for carrying less when summer backpacking, because this bag can still handle winter and swing season temperatures.
Yes , I recommend this product
WinterBird85
Big Lake, MN, United States
Awesome Sauce
10 years ago
I recently purchased this bag and used it for the first time up in Northern MN for a 3-day backpacking trip on the SHT. I was thoroughly impressed! The down-filling is extremely compressible and light. It got much colder (just below freezing) than I'd originally anticipated, yet I stayed nice and toasty through the night. I usually have a hard time sleeping on the ground but I can honestly say, I slept just about as good as if I were in my own bed! I made a divot in the ground under my sleeping pad for my butt, threw my empty pack under my knees, used my jacket in a stuff sack as a pillow, and then curled up in this dream-cloud of a sleeping bag, and my Lord, I slept like baby. It was awesome.
Yes , I recommend this product
EmTravelsLight
Perfect bag
10 years ago
I finally decided to invest in a quality sleeping bag and this one is everything I ever wanted. I took it out for a cold misty weekend in Oregon and slept like a rock. I'm usually very sensitive to cold and freeze when I camp and the extra foot insulation was awesome since my socks got soaked, forcing me to sleep barefoot. The hood was easy to tighten up around my head and the color and pattern are beautiful (the blue is a deeper blue than the picture shows and is pretty stunning if you're into that sort of thing). Very light and stuffs down pretty small. Overall, super happy about it and excited for future trips.
Yes , I recommend this product
Jonathan C
Lafayette, LA
Great Bag
10 years ago
Bought this bag for my wife. She is cold natured and I wanted a bag that would keep her warm (and happy) so after reading the reviews I was sold then we tried it out. We didn't push the temp limits of the bag by any stretch (50 deg night) but it kept her very comfortable. Water resistant down is very nice feature. The only downside is that because of the high loft of the down, it was quite a chore to squeeze it into a 13L stuff sack then squeezing the stuff sack into her Deuter Act Lite 45+10 sleeping bag compartment took a little effort but not unreasonable. Everything in life has trade-offs.
Yes , I recommend this product
Ccfitz
Warwick, RI, United States
Great Bag
10 years ago
I bought this for my scout camping trip this weekend when the temps were expected to dip in the low 30/upper 20's. I'm only 5'3" but I opted for the long bag so I can fit a few clothes in the bottom to keep them warm. I found there was plenty of room to be comfortable and not feel restricted. I woke up to a heavy frost outside but I was comfortably warm all night. I was able to fit the bag in the sleeping bag compartment of my 55L backpack, however, it was a bit of a struggle. I knew this when I bought it but if space is an issue, you may wish to check out bags that will compress more.
Yes , I recommend this product
GreenChick
Ohio
Sleep easy!
10 years ago
This is a great quality sleeping bag. It's very comfortable and holds heat well. I used it in Yosemite National Park when it got to 30 degrees at night; I couldn't even tell it was that cold, despite the frost on our tent. I highly recommend this product.
Yes , I recommend this product
MMaroste
Los Angeles, CA, United States
Very comfy & warm
10 years ago
I've only used it 2 nights in the Sierras but I loved it! It was extremely comfortable and warm (even for someone who is always cold). With a compression sack it reduces down to a pretty compact size. Looking forward to more trips with it!
Yes , I recommend this product
BE
Philadelphia, PA, United States
Roomy bag that I've yet to use.
8 years ago
Got this bag for overnights in Nov. in the Smokey Mountains. It is beautiful, in my opinion, as well as roomy. The zippers are nice and snug, so I've been working them back and forth to loosen for my hike. Bought a separate ground pad for this bag, but not sure how to attach them so the bag does not slip off of the pad. Don't know that that will happen anyway. I used "compare" feature on REIs website to make my decision about this bag. I think I made a very good choice with a great price. I joined REI before this purchase, so I saved an automatic $20 when I bought it. Shipping was free and prompt.
Yes , I recommend this product
Campchic
Baltimore, MD, United States
Warm sleeping bag
8 years ago
I bought this sleeping bag hoping it might work for my 12 year old daughter. We both gave it a test run in the backyard on a night when the temp was in the mid 30's. I was nice and warm in it and the fabric is quite durable and kept the breeze from penetrating through the fabric. It is a beautiful color, much prettier than in the picture. The only concern was that the top half of the bag is wide, which for a rather slender person meant that there were some cold spots. We ended up returning it in search of a bag that is narrower at the top. However, I would recommend this sleeping bag to any regular sized grown up who wants to stay warm on 35 degree night. Great price, also.
Yes , I recommend this product
DK13
Middleton, ID, United States
Sweat Box
10 years ago
Bought this for my wife for back packing and car camping because she was always cold with her old bag. On our last trip in the Sawtooths it got down to 35 in the tent and she stripped down to under wear because of the warmth of this thing. Great bag!
Yes , I recommend this product
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