REI Co-op
REI Co-op Trailmade 20 Sleeping Bag
$100Cheaper
Best Sleeping Bags · head-to-head
REI Co-op Trailmade 20 Sleeping Bag vs UltraLite Sleeping Bag
A sourced, side-by-side comparison. REI Co-op Trailmade 20 Sleeping Bag is cheaper at $100. Every spec and price links to its source.
Western Mountaineering
UltraLite Sleeping Bag
$660
Which is better: the REI Co-op Trailmade 20 Sleeping Bag or UltraLite Sleeping Bag?
The UltraLite Sleeping Bag wins 1 of the 1 specs we compare head to head; the other wins 0. The REI Co-op Trailmade 20 Sleeping Bag is the cheaper at $100. Get the UltraLite Sleeping Bag for the stronger spec sheet, the REI Co-op Trailmade 20 Sleeping Bag to spend less.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | REI Co-op Trailmade 20 Sleeping Bag | UltraLite Sleeping Bag |
|---|---|---|
| US price | $100 | $660 |
| Brand | REI Co-op | Western Mountaineering |
| Released | — | — |
| Temperature rating f | 21 | 20 |
| Insulation type | synthetic | down |
| Fill power | — | 850 |
| Shape | mummy | mummy |
| Packed weight (lb) | 3.29 | 1.81 |
| Packed size | 10 x 13 in | 7 x 13 in |
| Zipper side | — | left or right |
| Product note | Replaced the discontinued Trailbreak 20; recycled synthetic insulation; ISO Lower Limit 21F, Comfort 31F | 850+ FP ethically-sourced premium goose down; USA made; full-length #5 YKK zipper; 6'0" version weighs 1 lb 13 oz |
Sources — REI Co-op Trailmade 20 Sleeping Bag: rei.com (verified 2026-06-20). UltraLite Sleeping Bag: westernmountaineering.com (verified 2026-06-20).
What's the difference between the REI Co-op Trailmade 20 Sleeping Bag and UltraLite Sleeping Bag?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Temperature rating f: REI Co-op Trailmade 20 Sleeping Bag 21 vs UltraLite Sleeping Bag 20
- Insulation type: REI Co-op Trailmade 20 Sleeping Bag synthetic vs UltraLite Sleeping Bag down
- Packed weight (lb): REI Co-op Trailmade 20 Sleeping Bag 3.29 vs UltraLite Sleeping Bag 1.81
- Packed size: REI Co-op Trailmade 20 Sleeping Bag 10 x 13 in vs UltraLite Sleeping Bag 7 x 13 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 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