NEMO Equipment
NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F
$299.95Cheaper
Released 2024
Best Sleeping Bags · head-to-head
NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F vs Western Mountaineering UltraLite Sleeping Bag
A sourced, side-by-side comparison. NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F is cheaper at $299.95. Every spec and price links to its source.
Western Mountaineering
Western Mountaineering UltraLite Sleeping Bag
$660
Which is better: the NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F or Western Mountaineering UltraLite Sleeping Bag?
The Western Mountaineering UltraLite Sleeping Bag wins 1 of the 1 specs we compare head to head; the other wins 0. The NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F is the cheaper at $299.95. Get the Western Mountaineering UltraLite Sleeping Bag for the stronger spec sheet, the NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F to spend less.
See NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F on Amazon See Western Mountaineering UltraLite Sleeping Bag on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F | Western Mountaineering UltraLite Sleeping Bag |
|---|---|---|
| US price | $299.95 | $660 |
| Brand | NEMO Equipment | Western Mountaineering |
| Released | 2024 | — |
| Temperature rating f | 15 | 20 |
| Insulation type | down | down |
| Fill power | 650 | 850 |
| Shape | spoon | mummy |
| Packed weight (lb) | 2.69 | 1.81 |
| Packed size | 11.5 x 8.5 in | 7 x 13 in |
| Zipper side | left | left or right |
| Product note | Classic Spoon shape (mummy variant with extra shoulder/hip width); 650 FP PFAS-free hydrophobic RDS-certified down; Thermo Gill vents | 850+ FP ethically-sourced premium goose down; USA made; full-length #5 YKK zipper; 6'0" version weighs 1 lb 13 oz |
Sources — NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F: nemoequipment.com (verified 2026-06-20). Western Mountaineering UltraLite Sleeping Bag: westernmountaineering.com (verified 2026-09-21).
What's the difference between the NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F and Western Mountaineering UltraLite Sleeping Bag?
Where the two actually differ on the specs we track (7 of 8). Matching specs are omitted.
- Temperature rating f: NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F 15 vs Western Mountaineering UltraLite Sleeping Bag 20
- Fill power: NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F 650 vs Western Mountaineering UltraLite Sleeping Bag 850
- Shape: NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F spoon vs Western Mountaineering UltraLite Sleeping Bag mummy
- Packed weight (lb): NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F 2.69 vs Western Mountaineering UltraLite Sleeping Bag 1.81
- Packed size: NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F 11.5 x 8.5 in vs Western Mountaineering UltraLite Sleeping Bag 7 x 13 in
- Zipper side: NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F left vs Western Mountaineering UltraLite Sleeping Bag left or right
- Product note: NEMO Equipment Disco Men's Endless Promise Down Sleeping Bag 15F Classic Spoon shape (mummy variant with extra shoulder/hip width); 650 FP PFAS-free hydrophobic RDS-certified down; Thermo Gill vents vs Western Mountaineering UltraLite Sleeping Bag 850+ FP ethically-sourced premium goose down; USA made; full-length #5 YKK zipper; 6'0" version weighs 1 lb 13 oz