NEMO's value down bag against its lighter, higher-quality one. Both share the brand's relaxed, spoon-shaped cut for side sleepers, but the Riff steps up to higher fill power to shed weight, while the Disco keeps the price low.
| NEMO Disco 15 | NEMO Riff 15 | |
|---|---|---|
| GearScore | 84 | 85✓ |
| Comfort rating | 27 °F✓ | 28 °F |
| Weight | 2 lb 11.0 oz | 2 lb 7.0 oz✓ |
| Warmth-to-weight | 3.5 /100g | 3.8 /100g✓ |
| Packed size | 6.4 L | 6.2 L✓ |
| Fill power | 650 FP | 800 FP✓ |
| Price | $300✓ | $360 |
| Fill | Down | Down |
| Style | Bag | Bag |
| Shape | Semi-rectangular | Semi-rectangular |
Highlighted cells mark the better spec: Disco 15 in blue, Riff 15 in amber. A blank spec is never counted as a win. A lower comfort rating in °F means a warmer bag, so the warmer bag takes that row. GearScore is the overall rating (0 to 100); re-weight it on the full bag comparison. Prices are current MSRP.
This is NEMO's value down bag against its upgrade. The Disco 15 is the budget pick: a comfortable, spoon-shaped down bag at a low price, built with 650-fill down. The Riff 15 uses higher 800-fill down to come in lighter and pack a touch smaller for more money. Both use the same side-sleeper-friendly spoon shape and vent gills, so the core experience is similar.
The specs show what the extra money buys. The Riff uses higher fill power (800 against 650), which makes it lighter and slightly more packable at a nearly identical comfort rating. The Disco answers on price, undercutting the Riff by around sixty dollars. Warmth is effectively a wash between the two, so the decision is whether you would rather save weight or save money.
Pick the Riff 15 if you want the lighter, more packable bag and higher-quality down, and the price bump is worth it. Pick the Disco 15 if value leads and you do not mind carrying a few extra ounces for a comfortable, similarly warm bag. Both suit side sleepers thanks to the spoon shape, so weight and budget are really what separate them.
They are effectively the same, both rated in the high 20s Fahrenheit for comfort. The real difference is not warmth but weight: the Riff uses higher fill power to reach that rating with less down, so it weighs less. Pick by weight and budget, not warmth.
The Riff uses 800-fill down against the Disco's 650-fill. Higher fill power lofts more warmth per gram, so the Riff is lighter and packs a bit smaller for the same warmth. That better down is most of what the roughly sixty-dollar premium buys.
Yes, both. NEMO builds the Disco and Riff in a relaxed, spoon-shaped cut with extra room at the knees and elbows, which suits people who shift onto their sides. If you sleep still and want minimum weight, a trimmer mummy from another line will pack lighter.