Source-linked specifications for the REI Co-op Magma 15 — Long. This is a detailed sleeping bags record, checked on 2026-10-30; price and live stock are not verified.
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What the specs mean
The product name or temperature label is not automatically an ISO comfort rating. The recorded comfort figure is 21°F (-6.1°C); verify the exact size and test method before planning a cold night. Fit also depends on usable internal length, shoulder room and your sleeping position. Pad insulation and weather matter as much as the bag.
Read the exact variant
Long is the recorded option. Other sizes or revisions may have different dimensions, weight, or test labels.
Reported specifications
Unit conversions are calculated from the source value. Open the source tag for the originally published number.
| Specification | Manufacturer or retailer value |
|---|---|
| Product temperature label | 15°F [BQ-REI-MAGMA] |
| ISO comfort temperature | 21°F [BQ-REI-MAGMA] |
| ISO lower-limit temperature | 9°F [BQ-REI-MAGMA] |
| Temperature test standard | ISO (edition unspecified) [BQ-REI-MAGMA] |
| Rating method | label between comfort and limit [BQ-REI-MAGMA] |
| Fill | water-resistant goose down [BQ-REI-MAGMA] |
| Fill power | 850 [BQ-REI-MAGMA] |
| Maximum listed user height | 77 in [BQ-REI-MAGMA] |
| Shape | mummy [BQ-REI-MAGMA] |
| Shoulder girth | 63.5 in [BQ-REI-MAGMA] |
| Zipper side | left [BQ-REI-MAGMA] |
| Weight | 40.5 oz [BQ-REI-MAGMA] |
| Fill weight oz | 25.4 oz [BQ-REI-MAGMA] |
| Hip girth in | 55 in [BQ-REI-MAGMA] |
| Packed volume l | 8.2 L [BQ-REI-MAGMA] |
| Shell fabric | recycled ripstop nylon [BQ-REI-MAGMA] |
| Lining fabric | recycled 15D ripstop nylon [BQ-REI-MAGMA] |
A blank or unverified value means the dataset cannot support a number; it does not mean zero. Each source tag opens the record used for that field.
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Verification limits
Evidence basis: manufacturer_declared. US market: confirmed. Listing status: listed. These labels do not establish current stock.
Unverified fields: See blank fields in the source data.
- Only variants with explicit numerical values in the retrieved spec table are included; additional option names do not imply known measurements.
Where these facts came from
- REI Co-op Magma 15 Sleeping Bag — REI Co-op, accessed 2026-10-30 [BQ-REI-MAGMA]
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Questions to ask before buying
Is the listed price current?
No price or live stock data is included. Use the official product link for the current listing.
Does a nominal capacity or temperature label guarantee fit or warmth?
No. Compare exact dimensions and tested values where available, then allow for real-world conditions.
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