How to Choose Sleeping Bags for Backpacking
REI Co-op Trailmade 25 Sleeping Bag
$119.00 – to $139.00
For your next backpacking trip—or simply an overnight setup in the car—this REI Co-op synthetic sleeping bag checks all the boxes. It offers a trifecta of warmth, packability and light weight.
Key Details
Fill
100% recycled polyester
Weight
Short: 2 lbs. 12.35 oz.
Short Wide: 3 lbs.
Medium: 2 lbs. 15.14 oz.
Medium Wide: 3 lbs. 3.25 oz.
Long: 3 lbs. 2.48 oz.
Long Wide: 3 lbs. 8.26 oz.
Compressed Volume
Short: 7.3 liters
Short Wide: 8 liters
Medium: 8 liters
Medium Wide: 9.1 liters
Long: 8.5 liters
Long Wide: 10.3 liters
Temperature Rating (F)
25 degrees (F)
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- Inclusive sizing lets you find your best fit based on body shape and sleeping preferences
- Comfortable, "light-but-not-tight" mummy fit balances room to move with lightweight compressibility
- ISO Tested Lower Limit of 20°F ensures a warm, comfortable experience even in cooler weather
- 100% recycled polyester shell fabric with 100% recycled synthetic fill that keeps insulating even in damp conditions
- Shingled construction on top of the bag combines with layered bottom to provide trustworthy warmth at reduced bulk and weight
- Face muffler and full draft tube provide even more protection against the cold
- Contoured hood fits more naturally to your head, and it's sized to cradle most backpacking pillows
- Differentiated drawcords—1 round, 1 flat—on the hood and neck allow you to make adjustments easily, even in the dark
- Trapezoidal footbox provides room to move feet while keeping them cozy and warm
- Snag-resistant zipper with locking slider allows for footbox venting
- Interior stash pocket keeps your phone or headlamp handy
- Included stuff sack is optimized to fit in lower compartment of the REI Co-op Trailmade 60 pack
- Shell and lining both have a durable water repellent (DWR) finish made without PFAS to help moisture bead up on the surface
- Hand-wash or machine wash warm, gentle cycle in front-load washer only; do not bleach; rinse thoroughly; do not wring; air dry or tumble dry low; do not iron or dry clean
- 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
- Contains materials that meet the bluesign® criteria
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. 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 the REI Co-op Trailmade Product LineView 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 Camping |
|---|---|
| Tested Lower Limit | 20 degrees (F) - ISO |
| Tested Comfort | 31 degrees (F) - ISO |
| Temperature Rating (F) | 25 degrees (F) |
| Temperature Rating (C) | -4 degrees (C) |
| Weight | Short: 2 lbs. 12.35 oz. Short Wide: 3 lbs. Medium: 2 lbs. 15.14 oz. Medium Wide: 3 lbs. 3.25 oz. Long: 3 lbs. 2.48 oz. Long Wide: 3 lbs. 8.26 oz. |
| Shell | 30-denier, 100% recycled ripstop polyester with DWR made without PFAS (bluesign approved) |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | 100% recycled polyester |
| Fill Weight | Short: 1 lb. 12.4 oz. Short Wide: 1 lb. 15.1 oz. Medium: 1 lb. 14.7 oz. Medium Wide: 2 lbs. 1.2 oz. Long: 2 lbs. 0.7 oz. Long Wide: 2 lbs. 3.8 oz. |
| Sleeping Capacity | 1-person |
| Lining | 100% polyester with DWR made without PFAS |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Short: 66 inches Short Wide: 66 inches Medium: 72 inches Medium Wide: 72 inches Long: 78 inches Long Wide: 78 inches |
| Shoulder Girth (in.) | Short: 61.5 inches Short Wide: 69 inches Medium: 62 inches Medium Wide: 69 inches Long: 63 inches Long Wide: 70 inches |
| Hip Girth (in.) | Short: 53 inches Short Wide: 61.6 inches Medium: 54 inches Medium Wide: 62.5 inches Long: 55 inches Long Wide: 63.5 inches |
| Stuff Sack Volume | Short: 7.8 liters Short Wide: 10.2 liters Medium: 10.2 liters Medium Wide: 10.2 liters Long: 10.2 liters Long Wide: 12.6 liters |
| Compressed Volume | Short: 7.3 liters Short Wide: 8 liters Medium: 8 liters Medium Wide: 9.1 liters Long: 8.5 liters Long Wide: 10.3 liters |
| Gender | Unisex |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials From a Climate Label Certified brand |
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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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Customer Images
Location:Woodinville, WA
Age:45–54
Weight:125–150 lbs.
Height:5'3"
2 weeks ago
Perfect sleeping bag!
Received free product
Yes , I recommend this product
This is my PERFECT sleeping bag for spring and summer and Fall camping! Why? It’s lightweight. Not heavy. It’s compact! It comes with a stuff bag, and easily goes into it. It’s a decent size when packed. It’s cozy! It’s not too snug and it’s not too roomy. The head area fits comfortably around my head to keep extra warmth in, but it’s not annoying. It is warm - and rated for colder weather than I’ve used it in (so far). Also LOVE the color combination. I know this has nothing to do with how well it works and packs, but it’s the icing on the cake. I love the terra cotta paired with the deep teal. Overall, I give this 5 stars!
Age:45–54
Weight:125–150 lbs.
Height:5'3"
Age:45–54
6 days ago
Well-designed and functional
Received free product
Well-designed and functional sleeping bag rated to 25°F, although temperatures did not drop that low during my trial. What stood out most was its heat retention, along with a snug fit that felt comfortable rather than restrictive. While it is slightly bulkier than expected, it fits easily into the included stuff sack and appears capable of compressing further with a dedicated compression sack. The inclusion of an internal pocket for a phone was a pleasant surprise, and while not a critical factor, the color options are attractive and well done.
Age:45–54
Location:Encinitas, CA
Age:65–74
Weight:125–150 lbs.
Height:5'3"
2 weeks ago
Great 25 Sleeping Bag
Received free product
Yes , I recommend this product
This Trail made 25 is one of the best sleeping bags I have ever used. It definitely will keep you warm in that cold weather in the mountains. I have the medium and love the colors, that's a bonus. I have even used in my apartment that gets pretty cold.
Age:65–74
Weight:125–150 lbs.
Height:5'3"
Location:Pennsylvania
Age:25–34
Weight:125–150 lbs.
Height:5'7"
1 day ago
Great for indoor and outdoor use!
Received free product
Yes , I recommend this product
Got to test this indoors and outdoors as just as I received the product the heater broke. I used the bag for a solid week and it kept me very comfortable and cozy. It did seem to run a bit small and I'm not exactly a very large guy. 5'7" 140lbs and I fit comfortably but squirmers be aware its a bit hard to turn when inside the bag. I did take it out back on a chilly night for some hammock camping and star gazing in the back yard and it was cozy. Hammock under quilt was rated for only 50F and I still didn't feel chilly. My partner also tried it out (5'4", 170) and he fit comfortably as well. It's become a staple at the fire pit for keeping cozy in winter/spring. I will say it doesn't pack down as small and compact as my 50F rated bag, but it's still just as light and only takes up maybe two more inches of space in a bag. Worth it for the extra warmth if you ask me. The cool colors were just a bonus.
Age:25–34
Weight:125–150 lbs.
Height:5'7"