How to Choose Sleeping Bags for Backpacking
REI Co-op Trailmade 20 Sleeping Bag
$69.89Compared to $99.95* Save 30%
The REI Co-op Trailmade 20 sleeping bag checks all the boxes for your weekend backpacking trip (or simply an overnight setup in the car) with its trifecta of warmth, packability and weight.
Key Details
Fill
Polyester (98% recycled; bluesign approved)
Weight
Short - Left Zip: 3 lbs.
Short Wide - Left Zip: 3 lbs. 4 oz.
Regular - Left Zip: 3 lbs. 4.6 oz.
Regular Wide - Left Zip: 3 lbs. 9 oz.
Long - Left Zip: 3 lbs. 7.4 oz.
Long Wide - Left Zip: 3 lbs. 15.9 oz.
Compressed Volume
Short - Left Zip: 8.6 liters
Short Wide - Left Zip: 9.5 liters
Regular - Left Zip: 9.4 liters
Regular Wide - Left Zip: 11.2 liters
Long - Left Zip: 10.4 liters
Long Wide - Left Zip: 12.5 liters
Temperature Rating (F)
21 degrees (F)
- Comfortable, relaxed mummy shape gives you freedom to move while you sleep
- Water-resistant, recycled synthetic fill keeps insulating in damp conditions
- Durable water repellent (DWR) finish on the recycled polyester shell resists moisture and stains
- Offset quilt construction gives even coverage with no cold spots; face muffler and full draft tube provide even more protection against the cold air
- Contoured hood fits more naturally to your head; optimized for REI Co-op Trailmade Mummy Bag Pillow (not included) but fits most backpacking pillows
- The snag-resistant YKK zipper and differentiated drawcords (1 round, 1 flat) on the hood and neck allow you to make adjustments easily, even in the dark
- External zippered stash pocket keeps your phone or headlamp handy
- Included stuff sack compresses for packing; optimized to fit in lower compartment of REI Co-op Trailmade 60 pack (not included)
- 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 | 21 degrees (F) - ISO |
| Tested Comfort | 31 degrees (F) - ISO |
| Temperature Rating (F) | 21 degrees (F) |
| Temperature Rating (C) | -6 degrees (C) |
| Weight | Short - Left Zip: 3 lbs. Short Wide - Left Zip: 3 lbs. 4 oz. Regular - Left Zip: 3 lbs. 4.6 oz. Regular Wide - Left Zip: 3 lbs. 9 oz. Long - Left Zip: 3 lbs. 7.4 oz. Long Wide - Left Zip: 3 lbs. 15.9 oz. |
| Shell | Recycled polyester (bluesign approved) |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | Polyester (98% recycled; bluesign approved) |
| Fill Weight | Short - Left Zip: 2 lbs. 1 oz. Short Wide - Left Zip: 2 lbs. 3 oz. Regular - Left Zip: 2 lbs. 2.9 oz. Regular Wide - Left Zip: 2 lbs. 7 oz. Long - Left Zip: 2 lbs. 4 oz. Long Wide - Left Zip: 2 lbs. 10.3 oz. |
| Sleeping Capacity | 1-person |
| Lining | Polyester |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Short - Left Zip: 66 inches Short Wide - Left Zip: 66 inches Regular - Left Zip: 72 inches Regular Wide - Left Zip: 72 inches Long - Left Zip: 78 inches Long Wide - Left Zip: 78 inches |
| Shoulder Girth (in.) | Short - Left Zip: 60 inches Short Wide - Left Zip: 68 inches Regular - Left Zip: 62 inches Regular Wide - Left Zip: 70 inches Long - Left Zip: 62 inches Long Wide - Left Zip: 70 inches |
| Hip Girth (in.) | Short - Left Zip: 56 inches Short Wide - Left Zip: 64 inches Regular - Left Zip: 58 inches Regular Wide - Left Zip: 66 inches Long - Left Zip: 58 inches Long Wide - Left Zip: 66 inches |
| Stuff Sack Volume | Short - Left Zip: 13.4 liters Short Wide - Left Zip: 14.4 liters Regular - Left Zip: 14.4 liters Regular Wide - Left Zip: 16.8 liters Long - Left Zip: 14.4 liters Long Wide - Left Zip: 16.8 liters |
| Compressed Volume | Short - Left Zip: 8.6 liters Short Wide - Left Zip: 9.5 liters Regular - Left Zip: 9.4 liters Regular Wide - Left Zip: 11.2 liters Long - Left Zip: 10.4 liters Long Wide - Left Zip: 12.5 liters |
| Gender | Unisex |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials 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.
