GEAR CATALOG / SLEEPING BAGS / MAGMA 15 SLEEPING BAG
ITEM № 0103 · SLEEPING BAGS
PHOTO 01 / 01 · 907 G
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Magma 15 Sleeping Bag
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PROFILE
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FIELD MEASUREMENT · OUR SCALE
Mfr says 2.0 lb. Ours weighed in at 2.04 lb on a calibrated scale · close enough to forgive.
REI Co-op
CATALOG · 0103

Magma 15 Sleeping Bag.

The updated REI Co-op Magma 15 sleeping bag ensures comfort and toasty warmth without adding extra weight

PRICE
$399
WEIGHT
907 G
2.0 LB · 32.0 OZ
RATING
★ 4.1
49 reviews
↖ ounce-for-dollar, hard to beat
1
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Magma 15 Sleeping Bag is not in comparison
PACKED ALONGSIDE
SWALLOW UL 20/30 SLEEPING BAG NANOWAVE 45 SLEEPING BAG - MEN'S SNOWLINE SLEEPING BAG MERINO WOOL LIGHTWEIGHT HIKING CREW SOCKS
Field notes Specs Reviews · 49 Dissent · 6 UPDATED 15 FEB 2026
FIELD JOURNAL · ENTRY №0103

The updated REI Co-op Magma 15 sleeping bag ensures comfort and toasty warmth without adding extra weight. An extended range of sizes delivers your best fit for better sleep.

"Light enough to forget, structured enough to remember — that's the bar every piece of gear should hit."
— DESERT RAT DAN · PCT NOBO 2024
THE GOOD
  • + field-tested by long-trail hikers
  • + honest weight on a calibrated scale
  • + peer reviews · no affiliate slop
  • + REI Co-op reputation in this category
THE CATCH
  • − premium price
  • − single-use design — read the fine print
  • − availability runs short in shoulder season
  • − see dissent thread below for edge cases
From the trail

Reviews · 49

4.1/5
★ ★ ★ ★ ★
＋ Write a review
R
@desertratdan PCT NOBO · 2,653 MI VERIFIED PURCHASE 14 SEP 2024
★ ★ ★ ★ ★
Carried this from Campo to Manning. Held up better than I expected and survived three resupply box compressions. The fit and finish is the unsung hero — actually does what the spec sheet says.
F
@frostbite_fi TMB CCW · 105 MI VERIFIED PURCHASE 02 AUG 2024
★ ★ ★ ★ ★
Loved it for shorter trips — but I'd size carefully. The reference fit ran a hair small for my torso and I had to swap mid-trail. Once I had the right fit, no complaints.
B
@bivy_boy CT NOBO · 486 MI DISSENT 11 JUL 2024
★ ★ ★ ★ ★
Bottom panel pilled to fuzz by mile 200. Marketing copy isn't bombproof — pretend it's a delicate piece in disguise and it lasts. Drag it across granite and it doesn't.
↳ 14 hikers found this useful
SEE ALL 49 REVIEWS →
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