Quick Answer

On published specs, the REI Co-op Magma 30 is 28 g lighter than the Enlightened Equipment Revelation 20°. For weight-conscious backpackers in the 3-season down sleep systems category, that's the spec-sheet pick; the other side needs a fit, durability, or feature reason to justify the extra grams. Only the Enlightened Equipment Revelation 20° has a full research-based review on this site, which strengthens the case for that side. Current prices move with sales and season, so check both before deciding.

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REI Co-op Magma 30Enlightened Equipment Revelation 20°

Prices change with sales and season. Opening both in the same sitting is the only fair comparison.

How this comparison works: a side-by-side of published manufacturer specifications. Only the Enlightened Equipment Revelation 20° has a full research-based review on this site. The other product is spec-only, clearly marked.

The Specs Side by Side

REI Co-op REI Co-op Magma 30Sleep System

REI Co-op

REI Co-op Magma 30

Weight
0.57 kg (567 g)
Ultralight
Yes
Our rating
specs only — no full review yet

Manufacturer description

850-fill down mummy, ISO ~34°F comfort / ~24°F limit, ~0.57 kg regular.

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Enlightened Equipment Enlightened Equipment Revelation 20°Sleep System

Enlightened Equipment

Enlightened Equipment Revelation 20°

Weight
0.59 kg (595 g)
Ultralight
Yes
Comfort temp
20°F
Our rating
9.4/10

Our verdict

The Enlightened Equipment Revelation 20° is the most-recommended quilt in the ultralight backpacking community for good reason. At 21 oz with 850-fill DownTek and made-to-order in Minnesota, it delivers a 20°F comfort range at a weight that no sealed sleeping bag can match. The continuous baffle design lets you push fill to the cold side, the toe box zips fully open for venting, and the buckle-and-strap pad attachment creates a draft seal that rivals a mummy bag. It's not for everyone — cold sleepers, rotisserie sleepers, and very-cold-weather users may prefer a hooded mummy, but for 3-season backpacking, it is the warmth-to-weight benchmark.

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What the Numbers Say

  • ▸Weight: REI Co-op Magma 30 is the lighter of the two by 28 g (0.57 kg vs 0.59 kg). For thru-hiking and any pursuit where carry weight compounds across days, that delta matters.
  • ▸Price: not published here. List prices in this category go stale faster than we can maintain them, so both product links go to the current listing instead. Compare them the same day — a sale on one side can flip the ranking.
  • ▸Ultralight classification: both products are classified ultralight in their category — built for weight-conscious backpackers from the start.
  • ▸Review coverage: only the Enlightened Equipment Revelation 20° has a full research-based review (rated 9.4/10). The REI Co-op Magma 30 figures here are manufacturer-published specs only.

Detailed Breakdown

Carry weight and packed size

On the published spec sheet, the REI Co-op Magma 30 comes in at 567 grams against the 595 grams of the Enlightened Equipment Revelation 20°. That 28-gram gap may sound trivial in isolation but compounds across multi-day trips — at 25 km a day for a week, you're carrying that delta for about 175 km of trail. The REI Co-op Magma 30's ultralight classification reflects the deliberate design choices that produce the saving: thinner fabrics, simpler architectures, or fewer secondary features.

Price and total cost of ownership

We no longer publish list prices for either product. A figure written months ago and left to sit is worse than no figure at all, because you can check it in one click and find it wrong. Both product links on this page resolve to the current listing, so use those. Two things are worth knowing before you look: prices in this category move on a seasonal cycle, with last year's models clearing out in late winter and late summer, so patience is often worth more than a discount code. And the sticker is not the cost — a product that lasts seven seasons beats a cheaper one that lasts three, which is the lens to apply if you replace gear infrequently. We have no long-term durability data on either, so we won't name a winner on that; the owner feedback in each listing is the better guide.

Materials and durability

Material composition for both products comes from the manufacturer product pages and is not always reported in directly comparable units. The REI Co-op Magma 30 carries the manufacturer's published spec only; the Enlightened Equipment Revelation 20° has a full research-based review (rated 9.4/10). For the reviewed product, the durability verdict in the linked review draws on published testing and owner feedback. For the spec-only product, treat material claims as starting points, not verified data.

Features and ergonomics

Manufacturer feature descriptions: the REI Co-op Magma 30 — 850-fill down mummy, ISO ~34°F comfort / ~24°F limit, ~0.57 kg regular.. The Enlightened Equipment Revelation 20° — Made-to-order ultralight backpacking quilt with 850-fill DownTek hydrophobic down, continuous horizontal baffles, full-length zipper, and a closed toe box. Rated to 20°F at a configured weight near 21 oz (regular/wide, 850-fill). Pay particular attention to fit, adjustability, and hand-feel — three dimensions that don't show on a spec sheet and that disproportionately determine whether you'll actually reach for the gear after the first trip.

Use-case fit

The 3-season down sleep systems category covers a wide range of trip styles. For weight-counted thru-hikes, lean toward whichever is lighter on this page — every gram in your pack rides with you for thousands of kilometers. For weekend trips and base-camp days, weight matters less and durability, comfort, and feature count matter more — the heavier of the two on this page often makes more sense in those scenarios. For three-season generalist use, our recommendation: prioritize the product you can read a full research-based verdict on — that's the Enlightened Equipment Revelation 20° here.

Brand support and availability

REI Co-op and Enlightened Equipment both produce 3-season down sleep systems for the North American and EU markets. Availability varies: smaller cottage brands may require direct-from-manufacturer ordering with 2-6 week lead times, while bigger brands stock through REI, Backcountry, and large EU outdoor chains with same-week shipping. Before buying either, check the manufacturer's warranty terms (often 1, 2, or 10 years depending on brand culture) and the brand's reputation for honoring claims on minor failures versus catastrophic ones. Our research-based review notes warranty interactions where relevant, based on owner reports.

Frequently Asked Questions

Which is lighter, the REI Co-op Magma 30 or the Enlightened Equipment Revelation 20°?

On published manufacturer specs, the REI Co-op Magma 30 is the lighter of the two by 28 grams (0.57 kg vs 0.59 kg). For ultralight backpackers counting grams in the 3-season down sleep systems category, that's a meaningful difference.

Which costs less, the REI Co-op Magma 30 or the Enlightened Equipment Revelation 20°?

We don't publish list prices for these two. Gear in the 3-season down sleep systems category moves with seasonal clear-outs, retailer promotions and member rebates, so a figure written months ago is more likely to mislead you than help. Both product links on this page go straight to the current listing, which is the only price either of us should be working from. Compare them on the same day: a sale on one side can reverse the ranking entirely.

Does this site have full reviews of both products?

The Enlightened Equipment Revelation 20° has a full research-based review (rated 9.4/10), drawing on published testing and owner feedback. The REI Co-op Magma 30 figures on this page are published manufacturer specs only.

Is the REI Co-op Magma 30 ultralight by industry standards?

Yes. The REI Co-op Magma 30 is classified ultralight in our database (0.57 kg, sub-threshold for its sleep system category). Ultralight 3-season down sleep systems typically means built for thru-hikers and gram counters rather than three-season car-camping use.

Is the Enlightened Equipment Revelation 20° ultralight by industry standards?

Yes. The Enlightened Equipment Revelation 20° is classified ultralight in our database (0.59 kg, sub-threshold for its sleep system category). Built for thru-hikers and weight-conscious backpackers.

How should I choose between the REI Co-op Magma 30 and the Enlightened Equipment Revelation 20°?

Start with how much the weight matters to you. The REI Co-op Magma 30 saves 28 g, which is worth paying attention to if you carry it day after day on a long trip and close to irrelevant on a weekend out. Neither classification separates them, so the gap comes from incremental material and feature choices rather than a different design philosophy. After that it is fit and features, which specs cannot settle: read the owner feedback on both, and check the current price on each before you commit.

Where can I read the full review?

Only the Enlightened Equipment Revelation 20° has a full review at https://peakgearguide.com/reviews/enlightened-equipment-revelation. The REI Co-op Magma 30 does not have a full review yet — we list its manufacturer specifications only.

Bottom Line

Winner on weight: the REI Co-op Magma 30 by 28 g (0.57 kg vs 0.59 kg). If your trip style punishes grams, that's the pick.

Winner on price: we can't call this one honestly. Prices in this category move week to week, and the only figure worth acting on is the one on the listing today. Open both links and compare them in the same sitting.

Our overall lean: the Enlightened Equipment Revelation 20° is the safer pick because it has a full research-based review (9.4/10) where published testing and owner feedback corroborate the spec claims. The REI Co-op Magma 30 may well be excellent, but we can't say so from spec data alone.

Ready to decide

REI Co-op Magma 30Enlightened Equipment Revelation 20°

Prices change with sales and season. Opening both in the same sitting is the only fair comparison.

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