Disco 15 Sleeping Bag (Endless Promise / latest Disco 15 line) vs Riff 15 Endless Promise
Head-to-head sleeping bag comparison.
| Disco 15 Sleeping Bag (Endless Promise / latest Disco 15 line) | Riff 15 Endless Promise | |
|---|---|---|
| Brand | NEMO Equipment | NEMO Equipment |
| Price | $300 - $340 | $399 - $450 |
| Rating | 4.6 | 4.4 |
Comfort & Fit
Both bags are spoon-shaped to give side sleepers elbow and knee room, but the NEMO Disco 15 feels roomier and more intentionally livable — its spoon/mummy hybrid design, generous elbow clearance and vented footbox are clearly tuned for restless side sleepers. The Riff 15 is also roomy and comfortable, but the Disco’s extra cut and draft-management details translate to noticeably better sleep for people who toss and turn. If sleep comfort is your priority, Disco wins outright.
The Bottom Line
If your nights on trail are ruined by tight mummy bags, you want durable construction, left/right zipper pairing and real-world moisture protection — buy the NEMO Disco 15 Endless Promise. If your trips are shoulder-season, you obsess over warmth-per-ounce, need the smallest possible stuff size, and will tolerate a pricier, thinner-shell bag — buy the NEMO Riff 15 Endless Promise. Put plainly: pick Disco for comfort, robustness, and practical features; pick Riff for premium fill power and lighter pack impact.
Weight & Packability
If you care about shaving ounces and a smaller stuff-sack, the NEMO Riff 15 wins — its 800-fill down and lower-weight starts (around 2 lb 6 oz in some listings) compress down noticeably better than the Disco 15. The NEMO Disco 15 (2 lb 11 oz and up) is clearly the chunkier choice: you’ll feel the extra bulk in a loaded pack and notice the larger packed footprint on multi-day treks. In short: Riff for lighter, more compressible setups; Disco if you’re carrying sleep comfort over grams.
Zippers, Features & Pairing
Both bags have full-length, two-way zippers and Thermo Gills for venting, but the Disco 15 edges ahead with a YKK anti-snag slider and explicit left/right zipper orientation (men’s left, women’s right) that makes pairing two bags into a double bag straightforward. The Riff matches or slightly betters some specs with premium 800-fill down and DWR-treated fabrics, but if you want to zip two bags together or rely on a rugged zipper in the dark, Disco’s details matter. If couple-friendly features and snag-free operation are important, pick Disco.
Price, Value & Who Should Buy Which
The NEMO Disco 15 is the better value for hikers who put comfort and durability first but don’t want to overpay for the highest fill power — its $300–$340 price hits a practical sweet spot for roomy three-season warmth. The NEMO Riff 15 is the premium pick ($399–$450) for people who want maximum warmth-per-ounce and a smaller compressed size and who are willing to pay extra and baby the lighter fabric. Buy the Disco if you’re a side sleeper, restless camper, or couple who wants durable, feature-rich comfort; buy the Riff if you prioritize warmth-to-weight and compressibility and you accept a more delicate shell and higher price.
Materials, Durability & Failure Modes
The NEMO Disco 15 is the tougher bag on the trail — a 30D shell and 40D footbox withstand abrasion and campsite abuse better than the Riff’s lighter 20D shell (even with a 30D taffeta lining). The trade-off is obvious: the Riff’s finer fabric and higher-fill down deliver lighter packed weight but are more vulnerable to snags and seam stress; its finer textile also makes down leakage and wear more likely over years of regular use. Durable construction winner: Disco; performance-material winner for weight: Riff, with the usual fragility trade-offs.
Warmth, Fill Power & Temperature Management
For pure warmth-to-weight the NEMO Riff 15 takes the edge — 800-fill down lofts more per ounce so you get better insulation for less mass. That said, the NEMO Disco 15 fights back with real-world moisture resilience: 650 FP hydrophobic down plus a waterproof/breathable footbox and strong draft control make it a safer bet in damp or variable shoulder-season conditions. Winner for raw efficiency: Riff; winner for predictable warmth when it’s wet or dewy: Disco.
Read full Disco 15 Sleeping Bag (Endless Promise / latest Disco 15 line) review · Read full Riff 15 Endless Promise review