Magma 15vsSwift UL 30
Products · full comparison

Magma 15 vs Swift UL 30

data as of July 6 · updated weekly

How these two compare on everything we measure — where the AIs rank them, what reviewers and buyers say, and how they price. The differences are the point — they decide which one is yours.

Magma 15
by REI Co-op · Down sleeping bag with temperature rating
AI rank #2.0 fused across 5 questions in Camping & Hiking Gear$399official site
Reviewers
/5
Buyers
4.3/5
vs
AI rank #28.0 fused across 5 questions in Camping & Hiking Gearnew
Reviewers
/5
Buyers
/5

Side by side

Every signal we hold, on one shared scale. The leading side is lit — and where the AI panel and the reviewers pull apart, the row says so.?

#2.0
AI rankcombined avg · lower is betterfused across 5 questions in Camping & Hiking Gear
#28.0new
Reviewersout of 5
4.3
BuyersGoogle rating
$399
Street pricelower is cheaper
How this is made

Built from what 1 AI models (Perplexity) recommend for real buyer questions, layered with reviewer test summaries, Google buyer ratings, street prices and press. The short answer and verdict are derived from where those signals diverge — not written by hand for either product.

Independent — not a vendor, not advertising, not a paid review. How we score →

01

How the AIs rank them

1 models rank both products. Here’s each model’s pick (lower rank = higher).?

Perplexity
Magma 15
#2
Swift UL 30
#28
02

Which is better for what

Across the buyer-questions both appear in, who the AI panel ranks higher — and the widest gaps.?

Best Sleeping Bags Magma 15 by 26#2 vs #28
Across 1 shared questions: Magma 15 higher in 1 · Swift UL 30 in 0
Showing the 1 widest gaps
03

Critics & buyers

The human jury in one chapter — what the video reviewers score and say, the reviews behind it, and how Google buyers rate them.

What buyers say

Aggregated Google Shopping ratings — the score, the aspects owners rate, and a real quote.?

4.3
45 ratings
Warmth & temperature performance4.7
Zipper design & functionality2.5
Durability & build quality3.5
Comfort & fit3.8
A Testament! I bought my REI Magma 15 in August of 2019, and after years of cold weather, winter, and high-elevation summer camping in the Colorado mountains, it’s still one of my most reliable bags. I own five high quality down sleeping bags, and this one is still a consistent go to; even in the summer at elevation. Important note: the only real change since I bought mine is that REI now offers m Hbldenali · REI
Google ratings
no buyer reviews yet
04

How they price

Street price across retailers, the tier each lands in, and how it’s moved.?

$399
across 1 retailer
tier Mid-range
current street price
current model
no street price yet
05

Can you trust the claims

Each maker’s marketing weighed against independent tests — how many claims hold up, and the weakest one.?

Magma 15Magma 15
75
Warmth claims solid, but zipper design undermines them
1 hold up1 mixed0 overstated
Weakest claim
PromiseTemperature Rating (F): 15 degrees (F)
RealityWarmth solid, but zipper gaps undercut it
marketing claims not checked yet
06

The verdict: which to buy

Our read of everything above — who leads each point, and who each is for.

Magma 15
AI panel rank
Swift UL 30
Magma 15
Reviewer score
Swift UL 30
Magma 15
Buyer rating
Swift UL 30
Magma 15
Lower price
Swift UL 30

Net: Magma 15 leads 3 of 4 · Swift UL 30 0.

So which one?

Magma 15 leads more points — but check where it loses.

We don’t crown a winner. Both are strong; the differences above decide it for your use. Where a signal is missing, we leave it blank rather than guess.

as of July 6 · 1 shared buyer questions?

07

Common questions

The questions people ask comparing these two — answered from the data above.

QIs Magma 15 or Swift UL 30 better overall?

The AI panel ranks Magma 15 higher (avg #2.0 fused across 5 questions in Camping & Hiking Gear vs #28.0), but it’s close — reviewers and buyers split differently.

QWhich one is cheaper?

Magma 15$399 vs across retailers.