A close look at two sleeping bags buyers cross-shop. They score within a hair of each other, so it comes down to the details below.
| Marmot Trestles Elite Eco 20 | NEMO Forte 20 (Endless Promise) | |
|---|---|---|
| GearScore | 78✓ | 78 |
| Comfort rating | 24 °F✓ | 29 °F |
| Weight | 3 lb 8.4 oz | 3 lb 5.0 oz✓ |
| Warmth-to-weight | 2.9 /100g✓ | 2.7 /100g |
| Packed size | 9.1 L✓ | 10.6 L |
| Fill power | n/s | n/s |
| Price | $179✓ | $200 |
| Fill | Synthetic | Synthetic |
| Style | Bag | Bag |
| Shape | Mummy | Semi-rectangular |
Highlighted cells mark the better spec: Trestles Elite Eco 20 in blue, Forte 20 (Endless Promise) in amber. A blank spec is never counted as a win. A lower comfort rating in °F means a warmer bag, so the warmer bag takes that row. GearScore is the overall rating (0 to 100); re-weight it on the full bag comparison. Prices are current MSRP.
Put the Marmot Trestles Elite Eco 20 next to the NEMO Forte 20 (Endless Promise) and the trade-offs are clear. They are close enough that this really is about which handful of specs you weight most.
The Trestles Elite Eco 20 is warmer (rated 24°F vs 29°F), stronger on warmth-to-weight, and more packable (9.1 L vs 10.6 L). The Forte 20 (Endless Promise) is 3 oz lighter. Their GearScores land within a couple of points (78 vs 78), so neither runs away with it.
Pick the Trestles Elite Eco 20 if you care most about warmth and warmth-to-weight, which makes it the better call for colder nights and shoulder-season trips. Pick the Forte 20 (Endless Promise) if low weight matter more to you, or you are focused on counting grams on long miles.
The Marmot Trestles Elite Eco 20. It is warmer (rated 24°F vs 29°F) than the Forte 20 (Endless Promise).
The NEMO Forte 20 (Endless Promise). It is 3 oz lighter than the Trestles Elite Eco 20.
They are nearly tied at 78 and 78 on the default algorithm, so re-weight the score to your own priorities to break the tie.
It depends on your priorities. Go with the Trestles Elite Eco 20 for warmth, or the Forte 20 (Endless Promise) for low weight. The spec table above shows exactly where each wins.