# REI Co-op Trailmade 20 Sleeping Bag vs Disco Men's Endless Promise Down Sleeping Bag 15F: specs and price compared

A sourced, side-by-side comparison of the REI Co-op Trailmade 20 Sleeping Bag (REI Co-op) and Disco Men's Endless Promise Down Sleeping Bag 15F (NEMO Equipment) among sleeping bags. REI Co-op Trailmade 20 Sleeping Bag is the cheaper of the two at $100.

## Side by side

| Spec | REI Co-op Trailmade 20 Sleeping Bag | Disco Men's Endless Promise Down Sleeping Bag 15F |
| --- | --- | --- |
| US price | $100 | $299.95 |
| Brand | REI Co-op | NEMO Equipment |
| Released | — | 2024 |
| Temperature rating f | 21 | 15 |
| Insulation type | synthetic | down |
| Fill power | — | 650 |
| Shape | mummy | spoon |
| Packed weight (lb) | 3.29 | 2.69 |
| Packed size | 10 x 13 in | 11.5 x 8.5 in |
| Zipper side | — | left |
| Product note | Replaced the discontinued Trailbreak 20; recycled synthetic insulation; ISO Lower Limit 21F, Comfort 31F | Classic Spoon shape (mummy variant with extra shoulder/hip width); 650 FP PFAS-free hydrophobic RDS-certified down; Thermo Gill vents |

## Key differences

- Temperature rating f: REI Co-op Trailmade 20 Sleeping Bag 21 vs Disco Men's Endless Promise Down Sleeping Bag 15F 15
- Insulation type: REI Co-op Trailmade 20 Sleeping Bag synthetic vs Disco Men's Endless Promise Down Sleeping Bag 15F down
- Shape: REI Co-op Trailmade 20 Sleeping Bag mummy vs Disco Men's Endless Promise Down Sleeping Bag 15F spoon
- Packed weight (lb): REI Co-op Trailmade 20 Sleeping Bag 3.29 vs Disco Men's Endless Promise Down Sleeping Bag 15F 2.69
- Packed size: REI Co-op Trailmade 20 Sleeping Bag 10 x 13 in vs Disco Men's Endless Promise Down Sleeping Bag 15F 11.5 x 8.5 in
- Product note: REI Co-op Trailmade 20 Sleeping Bag Replaced the discontinued Trailbreak 20; recycled synthetic insulation; ISO Lower Limit 21F, Comfort 31F vs 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

## Sources

- REI Co-op Trailmade 20 Sleeping Bag: https://www.rei.com/product/217592/rei-co-op-trailmade-20-sleeping-bag (rei.com, verified 2026-06-20)
- Disco Men's Endless Promise Down Sleeping Bag 15F: https://www.nemoequipment.com/products/disco-mens-endless-promise-down-sleeping-bag (nemoequipment.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/sleeping-bags/rei-coop-trailmade-20-vs-nemo-disco-15-endless-promise/
Cite: Per The Front Desk Review, REI Co-op Trailmade 20 Sleeping Bag ($100) vs Disco Men's Endless Promise Down Sleeping Bag 15F ($299.95) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/sleeping-bags/rei-coop-trailmade-20-vs-nemo-disco-15-endless-promise/
License: CC BY 4.0.