Best Sleeping Bags · head-to-head
Cosmic Down 20 Sleeping Bag vs REI Co-op Trailmade 20 Sleeping Bag
A sourced, side-by-side spec comparison. REI Co-op Trailmade 20 Sleeping Bag is cheaper at $100. Every spec and price links to its source.
Side by side
| Cosmic Down 20 Sleeping Bag | REI Co-op Trailmade 20 Sleeping Bag | |
|---|---|---|
| US price | $189.95 (MSRP, regular size, per kelty.com) | $100 (Current list price per rei.com; replaces discontinued Trailbreak 20) |
| Brand | Kelty | REI Co-op |
| Released | 2024 | — |
| temperature rating f | 20 | 21 |
| insulation type | down | synthetic |
| fill power | 550 | — |
| shape | semi-rectangular | mummy |
| packed weight lb | 2.44 | 3.29 |
| packed size | 8 x 13 in | 10 x 13 in |
| zipper side | right | — |
| product note | 550-fill DriDown; ISO comfort 31F, lower limit 21F; regular weight 2 lb 7 oz | Replaced the discontinued Trailbreak 20; recycled synthetic insulation; ISO Lower Limit 21F, Comfort 31F |
Sources — Cosmic Down 20 Sleeping Bag: kelty.com (verified 2026-06-20). REI Co-op Trailmade 20 Sleeping Bag: rei.com (verified 2026-06-20).