Real owners lean toward the NEMO Disco 15: 81% of 185 owners recommend it, vs 59% of 17 for the Marmot Trestles Elite Eco 20.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
Roominess and comfort are the common draw for owners of both the NEMO Disco 15 and the Marmot Trestles Elite Eco 20, and both camps agree the bags are heavier and bulkier than ultralight down and run a touch colder than their labels suggest. Disco owners rave about the spoon shape that frees side and stomach sleepers to roll around, calling it the most comfortable bag they've used and warm on below-freezing nights, though they note the roughly 3-lb weight, a summer-too-warm feel, and a regular length that runs tight near 6 ft. Marmot owners value it as a synthetic pick for people avoiding down or wanting insulation that works when damp, praising the roomy Extra Wide and the price, while cautioning it needs a liner or layers once nights drop near 30F. Cold-weather campers who want the most sleeping room and a lower comfort temperature lean to the Disco. Those set on synthetic, damp-friendly warmth at a friendly price lean to the Marmot. The decision rests on insulation type and budget versus how cold the nights will get.
“Its very nice and comfy”— @JBC_cat on YouTube
“My shoulder season bag is the women's marmot trestles elite eco 20°F (note the men's temp rating is different). It's great, again not ultralight being synthetic, but it packs down small for the temperature, is cozy, and not super heavy. I think it's the best for that category without going for down.”— dontoweyoupretty on Reddit
“I got a synthetic marmot trestles elite (womens), comfort rated for 21F and it was def not. I slept in 32 and was freezing so bad i had to go sleep in my car.”— Status-Show4087 on Reddit
“Big Agnes Tiger Wall UL3 tent, Hyperlite Southwest 55L backpack, and Nemo Disco 15 sleeping bag were the big items. All did phenomenal”— spacerace2mars on Reddit
“Nemo disco 15 gang ✌️ awesome bags individually and together. No complaints”— pm_me-ur_feelings on Reddit
“Same thing happened to me when I took a Nemo Disco 15 out in low 20s when I first got into backpacking. Cold as heck from 3 am on.”— Scrandosaurus on Reddit
Roominess and comfort are the common draw for owners of both the NEMO Disco 15 and the Marmot Trestles Elite Eco 20, and both camps agree the bags are heavier and bulkier than ultralight down and run a touch colder than their labels suggest. Disco owners rave about the spoon shape that frees side and stomach sleepers to roll around, calling it the most comfortable bag they've used and warm on below-freezing nights, though they note the roughly 3-lb weight, a summer-too-warm feel, and a regular length that runs tight near 6 ft. Marmot owners value it as a synthetic pick for people avoiding down or wanting insulation that works when damp, praising the roomy Extra Wide and the price, while cautioning it needs a liner or layers once nights drop near 30F. Cold-weather campers who want the most sleeping room and a lower comfort temperature lean to the Disco. Those set on synthetic, damp-friendly warmth at a friendly price lean to the Marmot. The decision rests on insulation type and budget versus how cold the nights will get.
Owners point the Marmot Trestles Elite Eco 20 at shoulder-season backpackers in 30F-and-up temps, and campers avoiding down and animal products.
Owners point the NEMO Disco 15 at side and stomach sleepers who hate mummy-bag confinement, and bigger, broad-shouldered, or tall campers needing room.
The most-cited downside of the Marmot Trestles Elite Eco 20 is runs colder than its rating; needs a liner or layers below 30F. For the NEMO Disco 15, it's heavy and bulky for backpacking (around 3 lbs).