REI Co-op
Magma 15 Sleeping Bag
Best lightweight warmth for budget conscious backpackers.
This sleeping bag is engineered for cold-weather adventures, utilizing high-quality goose down to provide exceptional warmth without adding bulk. The mummy-style design features a contoured hood and an insulated yoke that effectively traps heat, ensuring comfort during chilly nights in the backcountry. A trapezoidal footbox provides extra room for natural foot positioning, enhancing overall comfort without sacrificing thermal efficiency. Built for those who demand performance in the wild, this piece of gear is an essential addition to any cold-weather kit, offering a reliable balance of weight, packability, and thermal protection for overnight excursions.
$193.05
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Owner Satisfaction
4.6
/ 5
Category Rank
307
/ 2020
#307 in Sleeping Bags
Price vs Category Average
+15%
Above average
Temperature Rating
15
/ degrees Fahrenheit
Who it's for
- Ounce-counting backpackers seeking reliable warmth on high-altitude treks
- Long-distance hikers prioritizing a streamlined and compact gear setup
- Side sleepers and active movers who need a natural fit
Who should skip it
- Rough-and-tumble campers who prioritize gear durability over weight savings
- Larger-framed sleepers or individuals who feel claustrophobic in tight bags
- Budget-conscious weekenders who only camp in mild summer conditions
Key Specs
Temperature Rating
15 degrees Fahrenheit
ISO Comfort Rating
21 degrees Fahrenheit
ISO Lower Limit Rating
9 degrees Fahrenheit
Insulation Type
850-fill-power goose down
Sleeping Bag Shape
Mummy
Lining Material
Nylon
Shoulder Girth
62.5 inches
Hip Girth
54 inches
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$193