REI Co-op Lyra 24 Sleeping Bag - Women's

This product is not available.

Shop similar products

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.


  • 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


Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. 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. Ratings are based on a person wearing one long underwear layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women's bags and the Lower Limit rating for men's and unisex bags. Everyone's body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.
View all REI Co-op Backpacking Sleeping Bags

Technical Specs

Best Use


Tested Lower Limit

12 degrees (F) - EN

Tested Comfort

24 degrees (F) - EN

Temperature Rating (F)

25 degrees

Temperature Rating (C)

-3.9 degrees


30-denier ripstop nylon

Zipper Location


Insulation Type



Synthetic fibers


40-denier nylon

Sleeping Bag Shape


Stuff Sack Size

8 x 18 inches




From a Climate Neutral Certified brand

9 reviews with an average rating of 4.6 out of 5 stars

Loading Reviews...

Questions & Answers

Loading Questions...