Two sleeping bags worth lining up side by side. They score within a hair of each other, so it comes down to the details below.
| Therm-a-Rest Hyperion 32 | REI Co-op Magma Trail Quilt 30 | |
|---|---|---|
| GearScore | 85✓ | 84 |
| Comfort rating | 41 °F | 40 °F✓ |
| Weight | 16.0 oz✓ | 20.3 oz |
| Warmth-to-weight | 6.4 /100g✓ | 5.2 /100g |
| Packed size | 2.5 L✓ | 3.0 L |
| Fill power | 900 FP✓ | 850 FP |
| Price | $350 | $329✓ |
| Fill | Down | Down |
| Style | Bag | Quilt |
| Shape | Mummy | Quilt |
Highlighted cells mark the better spec: Hyperion 32 in blue, Magma Trail Quilt 30 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.
The Therm-a-Rest Hyperion 32 and REI Co-op Magma Trail Quilt 30 take different routes to the same job. They are close enough that this really is about which handful of specs you weight most.
The Hyperion 32 is 4 oz lighter, stronger on warmth-to-weight, and more packable (2.5 L vs 3 L). The Magma Trail Quilt 30 is warmer (rated 40°F vs 41°F) and $21 cheaper. Their GearScores land within a couple of points (85 vs 84), so neither runs away with it.
Pick the Hyperion 32 if you care most about low weight and warmth-to-weight, which makes it the better call for counting grams on long miles. Pick the Magma Trail Quilt 30 if warmth and price matter more to you, or you are focused on colder nights and shoulder-season trips.
The Therm-a-Rest Hyperion 32. It is 4 oz lighter than the Magma Trail Quilt 30.
The REI Co-op Magma Trail Quilt 30. It is warmer (rated 40°F vs 41°F) than the Hyperion 32.
They are nearly tied at 85 and 84 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 Hyperion 32 for low weight, or the Magma Trail Quilt 30 for warmth. The spec table above shows exactly where each wins.