How to Choose Sleeping Bags for Backpacking
REI Co-op Halo +25 Sleeping Bag
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The REI Halo +25 down sleeping bag offers the perfect balance of low weight, premium materials and top-tier performance—a great choice for 3-season backpackers and ultralight adventurers.
Shop similar productsKey Details
Fill
750-fill goose down
Temperature Rating (F)
23 degrees (F)
- Features premium 750-fill-power goose down insulation, a downproof, partially recycled ripstop polyester shell and lining
- Exclusive REI Down Fill Calculator optimizes the amount of down per baffle for the most warmth with the least amount of down
- In-the-round design and baffle spacing allows the goose down to remain fully lofted and keeps it from shifting and migrating, preventing the onset of cold spots
- Contoured hood, face muffler, trapezoidal foot box, full-length, anti-snag zipper, and full-length draft tube with ground-level seams all keep body heat in, cold air out
- External chest pocket keeps essentials—headlamp, watch, glasses—right at hand and easy to find in the dark
- Differentiated drawcords (1 round, 1 flat) let you adjust hood and neck easily in the dark
- Pad loops provide attachment points to keep your sleeping bag and pad together, so you needn't worry about rolling onto the cold ground (straps sold separately)
- European Norm (EN) comfort rating allows direct comparison with comfort ratings of any other EN-rated bag
- Comes with stuff sack and 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
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 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 | 23 degrees (F) - EN |
| Tested Comfort | 34 degrees (F) - EN |
| Temperature Rating (F) | 23 degrees (F) |
| Temperature Rating (C) | -5 degrees Celsius |
| Shell | Ripstop polyester |
| Insulation Type | Down |
| Fill | 750-fill goose down |
| Lining | Ripstop polyester |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 8 x 17 inches |
| Stuff Sack Volume | 14 liter |
| Gender | Men's |
| Sustainability | 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.
