Here is how these two backpacks compare on the numbers. The Swift X leans on load carry while the Exos Pro 55 answers with low weight, so the pick comes down to which you value.
| Six Moon Designs Swift X | Osprey Exos Pro 55 | |
|---|---|---|
| GearScore | 69✓ | 67 |
| Capacity | 56 L | 55 L |
| Weight | 2 lb 7 oz | 2 lb 1 oz✓ |
| Rated load | 35 lb✓ | 30 lb |
| Fabric denier | 210 D✓ | 100 D |
| Price | $375 | $330✓ |
| Type | Ultralight | Ultralight |
| Frame | Internal | Internal |
Highlighted cells mark the better spec: Swift X in blue, Exos Pro 55 in amber. A blank spec is never counted as a win. Capacity is shown for context and is not scored, since more volume is a sizing choice rather than better. GearScore is the overall rating (0 to 100); re-weight it on the full backpack comparison. Prices are current MSRP.
The Six Moon Designs Swift X against the Osprey Exos Pro 55 is a study in priorities. The Swift X wins on load carry and durability, and the Exos Pro 55 pushes back on low weight and price.
The Swift X is a higher rated load (35 vs 30 lb) and tougher fabric (210D vs 100D). The Exos Pro 55 is 6 oz lighter and $45 cheaper. On the default GearScore the Swift X leads 69 to 67.
Pick the Swift X if you care most about load carry and durability, which makes it the better call for rough ground and hard use. Pick the Exos Pro 55 if low weight and price matter more to you, or you are focused on counting grams on long miles.
The Six Moon Designs Swift X. It is a higher rated load (35 vs 30 lb) than the Exos Pro 55.
The Osprey Exos Pro 55. It is 6 oz lighter than the Swift X.
The Six Moon Designs Swift X, 69 to 67 on the default algorithm. You can re-weight the factors to match your trip.
It depends on your priorities. Go with the Swift X for load carry, or the Exos Pro 55 for low weight. The spec table above shows exactly where each wins.