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Head-to-head · Best Backpacking Sleeping Bags

NEMO Disco 15 Endless Promise Down Sleeping Bag vs REI Co-op Trailmade 25

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

NEMO Disco 15 Endless Promise Down Sleeping Bag comes out ahead by a clear margin (4.1 vs 3.4). NEMO Disco 15 Endless Promise Down Sleeping Bag is best for: Side sleepers and restless sleepers who want a roomy, warm down bag for car camping and shorter backpacking trips more than an ultralight one. Read the strengths below before deciding.

NEMO Disco 15 Endless Promise Down Sleeping Bag
Higher ratedRanked #2 in Best Backpacking Sleeping Bags
NEMO Disco 15 Endless Promise Down Sleeping Bag
2 sources$299.95as of Oct 16

The NEMO Disco 15 trades low weight for room to move. Its hourglass, spoon-shaped cut, zippered Thermo Gill vents and oversized draft collar won it an Editors' Pick from Better Trail, which called it one of the most luxe-feeling backpacking bags it has used. Better Trail and CleverHiker both stayed warm in it in freezing conditions, and both flag the same cost: it weighs about 2 lb 14 oz and packs bulky because of its 650-fill down.

Strengths
  • — Hourglass, spoon-shaped cut gives side sleepers room to change position, per Better Trail and CleverHiker
  • — Two zippered Thermo Gill vents release heat without opening the main zipper
  • — Kept testers warm on low-30s nights (Better Trail) and 15 to 20°F desert nights with a base layer (CleverHiker)
Watch-outs
  • — At 2 lb 14 oz it is one of the heavier backpacking bags Better Trail has tested in its class
  • — 650-fill down packs bulkier than 850-fill bags, so CleverHiker calls it a poor fit for ultralight or long-distance trips
  • — The roomy interior holds heat less efficiently than a closer-fitting mummy, per CleverHiker
$299.95 · Buy at nemoequipment.comFull review →
REI Co-op Trailmade 25
Ranked #5 in Best Backpacking Sleeping Bags
REI Co-op Trailmade 25
2 sources

Value and size range are the REI Co-op Trailmade 25's calling cards, which makes it a good first bag or a good answer if standard cuts never fit you. Reviewer Ian Graber-Stiehl found the moisture-resistant synthetic insulation holds up to its 25°F comfort rating and rated the regular size well for average builds, but flagged the bulk and a zipper that snags. Six options cover short, short wide, regular, regular wide, long, and long wide. Casual campers and backpacking newcomers who value fit and price over ultralight weight should look here.

Strengths
  • — Excellent value for budget-conscious backpackers
  • — Insulation handles moisture well and performs to comfort temp rating
  • — Long upper/lower zips offer easy ventilation
Watch-outs
  • — Bulky design with significant packed volume
Buy at rei.comFull review →

How they stack up

NEMO Disco 15 Endless Promise Down Sleeping Bag

The Disco 15 and the Exped Terra 15 both use 650-fill down and are rated around 15°F; the Disco is the roomier spoon shape. It is heavier than the Mountain Hardwear Phantom 30 (1 lb 6 oz) and Kelty Cosmic Down 20 (2 lb 7 oz), but lighter than the synthetic REI Co-op Trailmade 25 (3 lb 4.6 oz).

REI Co-op Trailmade 25

The REI Co-op Trailmade 25 uses synthetic recycled polyester insulation where the Mountain Hardwear Phantom 30, Kelty Cosmic Down 20 and Exped Terra 15 use down, and it comes in six sizes including short wide and long wide. At 3 lbs 4.6 oz it is heavier than each of them, more than double the Phantom 30's 1 lb 6 oz.

Specs side-by-side

SpecNEMO Disco 15 Endless Promise Down Sleeping BagREI Co-op Trailmade 25
Temperature Rating27/16°F (ISO Comfort/Limit)25°F
Fill Power650-fill down—
Fill Weight1 lb 7 oz—
Weight2 lb 14 oz3 lbs., 4.6 oz.
Shell Fabric20D polyesterRecycled polyester
Shoulder/Hip Girth62/57 in—
Packed Volume14.9 L9.4 L
ShapeSpoon (hourglass) mummy—
Insulation—Recycled polyester
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