How to Choose Sleeping Bags for Backpacking
REI Co-op Lyra 24 Sleeping Bag - Women's
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Tapered at the shoulders and roomier at the hips, the REI Co-op Lyra 24 sleeping bag is tailored to give female backpackers 3-season warmth and excellent compressibility at a great price.
Shop similar productsKey Details
Fill
Synthetic fibers
Temperature Rating (F)
25 degrees
- REI-exclusive insulation uses a mixture fibers to create the right balance of compression, recovery, warmth, loft and softness
- Designed for women: increased hip room and decreased shoulder room offer better thermal efficiency
- Hood holds a backpacking pillow (sold separately); pad loops hold a sleeping pad (sold separately) in place
- Draft collar, face muffler and full draft tube keep cold air out
- Interior pocket for stashing essentials
- Differentiated drawcords at hood and neck (1 round, 1 flat) simplify adjustments in the dark
- Antisnag zipper guard keeps zipper operating smoothly
- Shingled construction with overlapping layers eliminates cold spots
- Water- and abrasion-resistant ripstop nylon shell
- Trapezoidal footbox mirrors body shape for thermal efficiency
- Comes with a stuff sack for packing and a roomy nylon/mesh sack for breathable storage
- 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 | 12 degrees (F) - EN |
| Tested Comfort | 24 degrees (F) - EN |
| Temperature Rating (F) | 25 degrees |
| Temperature Rating (C) | -3.9 degrees |
| Shell | 30-denier ripstop nylon |
| Zipper Location | Right |
| Insulation Type | Synthetic |
| Fill | Synthetic fibers |
| Lining | 40-denier nylon |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 8 x 18 inches |
| Gender | Women'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.
