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
- Contains materials that meet the bluesign® criteria
- 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.
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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