# Trestles Elite Eco 20 Sleeping Bag vs UltraLite Sleeping Bag: specs and price compared

A sourced, side-by-side comparison of the Trestles Elite Eco 20 Sleeping Bag (Marmot) and UltraLite Sleeping Bag (Western Mountaineering) among sleeping bags. Trestles Elite Eco 20 Sleeping Bag is the cheaper of the two at $200.

## Side by side

| Spec | Trestles Elite Eco 20 Sleeping Bag | UltraLite Sleeping Bag |
| --- | --- | --- |
| US price | $200 | $660 |
| Brand | Marmot | Western Mountaineering |
| Temperature rating f | 20 | 20 |
| Insulation type | synthetic | down |
| Fill power | — | 850 |
| Shape | mummy | mummy |
| Packed weight (lb) | 2.37 | 1.81 |
| Packed size | 9.4 x 18.9 in | 7 x 13 in |
| Zipper side | left | left or right |
| Product note | HL-ElixR Eco Micro recycled synthetic insulation; dual-zipper with secondary vent zip; ISO comfort 32F, lower limit 21.6F; listed weight 1,077 g | 850+ FP ethically-sourced premium goose down; USA made; full-length #5 YKK zipper; 6'0" version weighs 1 lb 13 oz |

## Key differences

- Insulation type: Trestles Elite Eco 20 Sleeping Bag synthetic vs UltraLite Sleeping Bag down
- Packed weight (lb): Trestles Elite Eco 20 Sleeping Bag 2.37 vs UltraLite Sleeping Bag 1.81
- Packed size: Trestles Elite Eco 20 Sleeping Bag 9.4 x 18.9 in vs UltraLite Sleeping Bag 7 x 13 in
- Zipper side: Trestles Elite Eco 20 Sleeping Bag left vs UltraLite Sleeping Bag left or right
- Product note: Trestles Elite Eco 20 Sleeping Bag HL-ElixR Eco Micro recycled synthetic insulation; dual-zipper with secondary vent zip; ISO comfort 32F, lower limit 21.6F; listed weight 1,077 g 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

## Sources

- Trestles Elite Eco 20 Sleeping Bag: https://www.rei.com/product/144180/marmot-trestles-elite-eco-20-sleeping-bag-mens (rei.com, verified 2026-06-20)
- UltraLite Sleeping Bag: https://www.westernmountaineering.com/product/ultralite/ (westernmountaineering.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/sleeping-bags/marmot-trestles-elite-eco-20-vs-western-mountaineering-ultralite/
Cite: Per The Front Desk Review, Trestles Elite Eco 20 Sleeping Bag ($200) vs UltraLite Sleeping Bag ($660) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/sleeping-bags/marmot-trestles-elite-eco-20-vs-western-mountaineering-ultralite/
License: CC BY 4.0.