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REI Co-op
REI Co-op Zephyr 25 Sleeping Bag
REI Co-op Zephyr 25 Sleeping Bag
Regular price
$149.31 USD
Regular price
Sale price
$149.31 USD
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The REI Co-op Zephyr 25 is the top REI Co-op brand synthetic sleeping bag, ideal for backpacking from spring through fall. An extended range of sizes delivers your best fit for better sleep.
The semifitted mummy shape offers the roomiest fit of REI Co-op backpacking bags, with extra room in the knee area for a variety of sleeping positions. The 100% recycled ripstop nylon shell and 100% recycled nylon lining feature a durable water repellent (DWR) finish made without PFAS. The 100% recycled PET polyester insulation is durable and highly compressible, retaining some insulating ability even when damp.
Key Features
| Best Use | Backpacking |
| Tested Lower Limit | 17 degrees (F) - ISO |
| Tested Comfort | 28 degrees (F) - ISO |
| Temperature Rating (F) | 25 degrees (F) |
| Temperature Rating (C) | -4 degrees (C) |
| Weight | Short: 2 lbs. 12 oz. - Short Narrow: 2 lbs. 9 oz. - Short Wide: 2 lbs. 14 oz. - Medium Narrow: 2 lbs. 13 oz. - Medium: 3 lbs. - Medium Wide: 3 lbs. 3 oz. - Long Narrow: 3 lbs. 2 oz. - Long: 3 lbs. 4 oz. - Long Wide: 3 lbs. 8 oz. |
| Shell | 100% recycled ripstop nylon (bluepass certified) |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | 100% recycled PET polyester |
| Fill Weight | Short: 2 lbs. 0.4 oz. - Short Narrow: 1 lb. 13.8 oz. - Short Wide: 2 lbs. 2.2 oz. - Medium Narrow: 2 lbs. 1.4 oz. - Medium: 2 lbs. 3.5 oz. - Medium Wide: 2 lbs. 5.4 oz. - Long Narrow: 2 lbs. 5.5 oz. - Long: 2 lbs. 6.7 oz. - Long Wide: 2 lbs. 9.8 oz. |
| Sleeping Capacity | 1-person |
| Lining | 100% recycled nylon (bluepass certified) |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Short: 65 inches - Short Narrow: 65 inches - Short Wide: 65 inches - Medium Narrow: 71 inches - Medium: 71 inches - Medium Wide: 71 inches - Long Narrow: 77 inches - Long: 77 inches - Long Wide: 77 inches |
| Shoulder Girth (in.) | Short: 65.5 inches - Short Narrow: 58 inches - Short Wide: 73 inches - Medium Narrow: 59 inches - Medium: 66.5 inches - Medium Wide: 74 inches - Long Narrow: 60 inches - Long: 67.5 inches - Long Wide: 75 inches |
| Hip Girth (in.) | Short: 56 inches - Short Narrow: 48.5 inches - Short Wide: 64.5 inches - Medium Narrow: 49.5 inches - Medium: 57 inches - Medium Wide: 65.5 inches - Long Narrow: 50.5 inches - Long: 58 inches - Long Wide: 66.5 inches |
| Stuff Sack Size | Short: 7.75 x 12.5 inches - Short Narrow: 7.75 x 12.5 inches - Short Wide: 7.75 x 12.5 inches - Medium Narrow: 7.75 x 12.5 inches - Medium: 7.75 x 12.5 inches - Medium Wide: 7.75 x 12.5 inches - Long Narrow: 7.75 x 12.5 inches - Long: 7.75 x 12.5 inches - Long Wide: 8.25 x 14.5 inches |
| Stuff Sack Volume | Short: 10 liters - Short Narrow: 10 liters - Short Wide: 10 liters - Medium Narrow: 10 liters - Medium: 10 liters - Medium Wide: 10 liters - Long Narrow: 10 liters - Long: 10 liters - Long Wide: 12.5 liters |
| Compressed Volume | Short: 7.3 liters - Short Narrow: 6.8 liters - Short Wide: 8.1 liters - Medium Narrow: 7.8 liters - Medium: 8.3 liters - Medium Wide: 8.7 liters - Long Narrow: 8.8 liters - Long: 8.9 liters - Long Wide: 10.3 liters |
| Gender | Unisex |
| Sustainability | Contains bluepass certified material - Contains recycled materials - From a Climate Label Certified brand |
Highlights
- 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 durable water repellent (DWR) finish made without PFAS that 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 breathability
Videos
Size chart
| Attribute | Short | Medium | Long | Short Narrow | Medium Narrow | Long Narrow | Short Wide | Medium Wide | Long Wide |
|---|---|---|---|---|---|---|---|---|---|
| Height Range | 4'11"-5'5" | 5'5"-5'11" | 5'11"-6'5" | 4'11"-5'5" | 5'5"-5'11" | 5'11"-6'5" | 4'11"-5'5" | 5'5"-5'11" | 5'11"-6'5" |
| Body Hip Measurement | 39-45 | 39-45 | 39-45 | 32-39 | 32-39 | 32-39 | 45-52 | 45-52 | 45-52 |
- Contains bluepass certified material
- Contains recycled materials
- From a Climate Label Certified brand
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