Nemo Disco Endless Promise 15.
Spoon-shaped bag with Thermo Gills for temperature regulation and a waterproof footbox. 15°F rated with 650-fill DownTek.
The Verdict.
Gavler Meta-Score
“The best sleeping bag for side-sleepers and comfort-first backpackers. Thermo Gills and the spoon shape solve real problems that mummy bags don't address. Not ultralight, but the sleep quality is worth the extra ounces.”
The Gavler Verdict
Precision Engineering
Spoon Shape
Wider at elbows and knees for side-sleepers — room to shift without the weight of a rectangular bag.
Thermo Gills
Zippered chest vents for on-the-fly temperature regulation without opening the main zipper.
Waterproof Footbox
Sealed footbox protects against condensation and tent-wall contact.
Technical Specifications
The Scoreboard
Highest comfort ratings in the category. Weight-conscious reviewers dock points for the 2 lb 14 oz packed weight.
Cast Your Vote
Do you think Nemo Disco Endless Promise 15 deserves the #3 spot in Best Backpacking Sleeping Bags?
Best Price Availability.
Prices checked April 2026
Price History
Lowest price in 30 days30-Day Low
$290
30-Day High
$290
Current
$290
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Global Critique
“Best sleeping bag for side-sleepers — the spoon shape is a genuine comfort improvement over traditional mummy bags.”
“Thermo Gills are the most practical temperature-management feature in any sleeping bag.”
“Not the lightest, but the best night's sleep I've had in a backpacking bag.”
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