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The updated REI Co-op Magma 30 sleeping bag ensures comfort and toasty warmth without adding extra weight. An extended range of sizes delivers your best fit for better sleep—all under 2 lbs.
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| Best Use | Backpacking |
| Tested Lower Limit | 24 degrees (F) - ISO |
| Tested Comfort | 34 degrees (F) - ISO |
| Temperature Rating (F) | 30 degrees (F) |
| Temperature Rating (C) | -9 degrees (C) |
| Weight | Short Narrow |
| Short | 1 lb. 6.8 oz. |
| Short Wide | 1 lb. 8.4 oz. |
| Medium Narrow | 1 lb. 6.9 oz. |
| Medium | 1 lb. 8.4 oz. |
| Medium Wide | 1 lb. 10 oz. |
| Long Narrow | 1 lb. 9 oz. |
| Long | 1 lb. 10.1 oz. |
| Long Wide | 1 lb. 11.8 oz. |
| Shell | 15-denier recycled ripstop nylon\xa0(bluesign approved) |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 850-fill-power water-resistant goose down (bluesign approved) |
| Fill Weight | Short Narrow |
| Short | 11.5 ounces |
| Short Wide | 12.4 ounces |
| Medium Narrow | 11.9 ounces |
| Medium | 12.7 ounces |
| Medium Wide | 13.7 ounces |
| Long Narrow | 13.1 ounces |
| Long | 13.9 ounces |
| Long Wide | 14.7 ounces |
| Sleeping Capacity | 1-person |
| Lining | 15-denier recycled ripstop nylon (bluesign approved) |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Short Narrow |
| Short | 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 Narrow |
| Short | 61.5 inches |
| Short Wide | 69 inches |
| Medium Narrow | 55 inches |
| Medium | 62.5 inches |
| Medium Wide | 70 inches |
| Long Narrow | 56 inches |
| Long | 63.5 inches |
| Long Wide | 71 inches |
| Hip Girth (in.) | Short Narrow |
| Short | 53 inches |
| Short Wide | 61.5 inches |
| Medium Narrow | 46.5 inches |
| Medium | 54 inches |
| Medium Wide | 62.5 inches |
| Long Narrow | 47.5 inches |
| Long | 55 inches |
| Long Wide | 63.5 inches |
| Stuff Sack Size | Short Narrow |
| Short | 6 x 14 inches |
| Short Wide | 6 x 14 inches |
| Medium Narrow | 6 x 14 inches |
| Medium | 7 x 15 inches |
| Medium Wide | 7 x 15 inches |
| Long Narrow | 7 x 15 inches |
| Long | 7 x 15 inches |
| Long Wide | 7 x 15 inches |
| Stuff Sack Volume | Short Narrow |
| Short | 5 liters |
| Short Wide | 5 liters |
| Medium Narrow | 5 liters |
| Medium | 7.5 liters |
| Medium Wide | 7.5 liters |
| Long Narrow | 7.5 liters |
| Long | 7.5 liters |
| Long Wide | 7.5 liters |
| Compressed Volume | Short Narrow |
| Short | 3.7 liters |
| Short Wide | 4.2 liters |
| Medium Narrow | 4 liters |
| Medium | 4.3 liters |
| Medium Wide | 4.7 liters |
| Long Narrow | 4.2 liters |
| Long | 4.7 liters |
| Long Wide | 5.2 liters |
| Gender | Unisex |
| Sustainability | Contains recycled materials |
| Contains materials that meet the bluesign® criteria | |
| From a Climate Neutral Certified brand |
