- Gear
- Sleep Systems
- Zephyr 25 Sleeping Bag
Features
- Inclusive sizing lets you find your best fit based on body shape and sleeping preferences
- Semifitted mummy shape provides the roomiest fit of our backpacking bags, offering extra room in the knee area to enable a variety of sleeping positions
- Recycled shell and lining fabrics feature a nonfluorinated durable water repellent (DWR) finish to help moisture bead up on the surface
- 100% recycled synthetic polyester insulation is durable and highly compressible; the fill also retains some insulating ability even if it gets damp
- Shingle construction on top provides uniform loft and helps prevent insulation from shifting and creating cold spots
- Offset quilt construction on the bottom optimizes bag/pad system warmth while reducing unnecessary weight and bulk
- Comfortable hood shape works well for all sleep positions and allows for easy integration with a backpacking pillow (not included)
- 2 differentiated drawcords make the hood easy to adjust while you're zipped in the bag
- Insulated muffler and full-length zipper draft tube keep warmth in and cold out
- Zipper path wraps around the front of your chest so you can more easily zip and unzip the bag; zipper cover and internal antisnag strip allow for frustration-free zipping
- Roomy trapezoidal footbox provides space to move your feet while still remaining warm and cozy
- Keep personal items close and easy to access in the interior stash pocket
- Includes a stuff sack for packing and a roomy mesh sack for breathable storage
- 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
- REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits
- Contains materials that meet the bluesign® criteria
Technical Specs
- FillRecycled PET polyester
- ShellRecycled ripstop nylon (bluesign approved)
- Lining20-denier recycled nylon (bluesign approved)
- Weight2 lbs. 9 oz.,2 lbs. 12 oz.,2 lbs. 14 oz.,2 lbs. 13 oz.,3 lbs.,3 lbs. 3 oz.,3 lbs. 2 oz.,3 lbs. 4 oz.,3 lbs. 8 oz.
- Best UseBackpacking
- Fill Weight1 lb. 13.8 oz.,2 lbs. 0.4 oz.,2 lbs. 2.2 oz.,2 lbs. 1.4 oz.,2 lbs. 3.5 oz.,2 lbs. 5.4 oz.,2 lbs. 5.5 oz.,2 lbs. 6.7 oz.,2 lbs. 9.8 oz.
- Tested Comfort28 degrees (F) - ISO
- Insulation TypeSynthetic
- Zipper LocationLeft
- Fits Up To (in.)65 inches,65 inches,65 inches,71 inches,71 inches,71 inches,77 inches,77 inches,77 inches
- Sleeping Capacity1-person
- Sleeping Bag ShapeMummy
- Tested Lower Limit17 degrees (F) - ISO
- Shoulder Girth (in.)58 inches,65.5 inches,73 inches,59 inches,66.5 inches,74 inches
- Temperature Rating (C)-4 degrees (C)
- Temperature Rating (F)25 degrees (F)