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REI Co-op Magma 30 Sleeping Bag Blue Long Wide

REI Co-op Magma 30 Sleeping Bag Blue Long Wide

3.7(47 ratings)

Best price now

$250.93at REIObserved Nov 5, 2026, 6:54 PM

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Our take on the REI Co-op Magma 30 Sleeping Bag Blue Long Wide

The REI Co-op Magma 30 is a three-season mummy bag filled with water-resistant 850-fill down, rated to a 30°F comfort point and a 24°F ISO lower limit. It packs small for backpacking and weighs little for a down bag at this price. The long-wide version adds length and shoulder room for bigger sleepers. At $250.93 at REI as of November 5, 2026, it sits near the top of its recent range, so waiting for a Co-op sale or member coupon is reasonable.

Best forThree-season backpackersCold sleepers who want a 30°F down bagTall or broad sleepers needing a long-wide cutBuyers who want a down bag under $300
Pros
  • Water-resistant 850-fill down holds loft in damp conditions
  • 30°F comfort rating with a 24°F ISO lower limit
  • Light and compressible for a down bag at this price
  • Long-wide cut fits taller and broader sleepers
  • Left-side zip and mummy hood with draft collar
Cons
  • Some owners report the rating feels optimistic in the low 30s
  • Down needs careful care and costs more than synthetic
  • Long-wide size adds bulk and weight over the regular
  • Shell fabric is thin and can snag on rough ground

REI Co-op Magma 30 Sleeping Bag Blue Long Wide prices at every store

  • REINew

    In stock

    $250.93Observed Nov 5, 2026, 6:54 PM
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Also available at

  • eBayCheck price at eBay

REI Co-op Magma 30 Sleeping Bag Blue Long Wide price history

Lowest price we've seen: $250.93 on Nov 5 at REI. Tracked across 1 store since Nov 5.

What reviewers say

  • 3.7 / 547 ratings

Ratings average 3.7 out of 5 from 47 buyers, with most praise for warmth-to-weight and packability. Complaints center on the temperature rating running cold for some sleepers and on durability of the thin shell.

What people mention
  • WarmthMixedMany find it warm into the 30s, but some cold sleepers say it runs short of its rating.
  • PackabilityPraisedOwners like how small it compresses for a down bag at this price.
  • FitPraisedThe long-wide cut draws praise from taller and broader sleepers.
  • Shell durabilityCriticisedReviewers say the thin fabric snags and needs care around rough ground.
  • ZipperCriticisedSome owners report the zipper catching on the draft tube.

Specifications

Tested Lower Limit
24 degrees (F) - ISO
Tested Comfort
34 degrees (F) - ISO
Temperature Rating (F)
30 degrees (F)
Temperature Rating
-9 degrees
Zipper Location
Left
Insulation Type
Down
Water-Resistant Down
Yes

Questions and answers

Is the Magma 30 warm enough for freezing nights?
Its ISO comfort rating is 34°F and its lower limit is 24°F, so it suits three-season use down to about freezing with a warm pad and base layers. Cold sleepers should size up to the Magma 15 for winter.
How does it compare with the REI Co-op Magma 15?
The Magma 15 carries more down and is rated for colder nights but weighs more and costs more. The 30 is the better pick for summer and mild shoulder seasons.
What does the long-wide size change?
It adds length and shoulder girth for taller or broader sleepers, at the cost of a little extra weight and packed size. The regular fits most sleepers up to about 6 feet.
Is the down treated for wet weather?
Yes, the down is water-resistant, which helps it keep loft in damp conditions. It is not waterproof, so pair it with a dry sack or pack liner.
When is the best time to buy it?
REI Co-op brand gear usually drops during member sales and end-of-season clearance. At $250.93 as of November 5, 2026, it is near its recent high, so a sale is worth waiting for.
Where is the REI Co-op Magma 30 Sleeping Bag Blue Long Wide cheapest?
At REI, for $250.93, as of our latest check.
What do buyers say about the REI Co-op Magma 30 Sleeping Bag Blue Long Wide?
Rated 3.7 out of 5 from 47 ratings.
Where can I buy the REI Co-op Magma 30 Sleeping Bag Blue Long Wide?
2 stores we checked sell it, including REI, eBay.

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Sleeping Capacity
1-person
Sleeping Bag Shape
Mummy