A close look at two backpacks buyers cross-shop. They score within a hair of each other, so it comes down to the details below.
| Six Moon Designs Swift X | Hyperlite Mountain Gear Windrider 55 | |
|---|---|---|
| GearScore | 69✓ | 68 |
| Capacity | 56 L | 55 L |
| Weight | 2 lb 7 oz | 1 lb 15 oz✓ |
| Rated load | 35 lb | 40 lb✓ |
| Fabric denier | 210 D | n/s |
| Price | $375✓ | $420 |
| Type | Ultralight | Ultralight |
| Frame | Internal | Internal |
Highlighted cells mark the better spec: Swift X in blue, Windrider 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.
Put the Six Moon Designs Swift X next to the Hyperlite Windrider 55 and the trade-offs are clear. They are close enough that this really is about which handful of specs you weight most.
The Swift X is $45 cheaper. The Windrider 55 is 8 oz lighter and a higher rated load (40 vs 35 lb). Their GearScores land within a couple of points (69 vs 68), so neither runs away with it.
Pick the Swift X if you care most about price, which makes it the better call for getting the most for your money. Pick the Windrider 55 if low weight and load carry matter more to you, or you are focused on counting grams on long miles.
The Hyperlite Windrider 55. It is 8 oz lighter than the Swift X.
The Hyperlite Windrider 55. It is a higher rated load (40 vs 35 lb) than the Swift X.
They are nearly tied at 69 and 68 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 Swift X for price, or the Windrider 55 for low weight. The spec table above shows exactly where each wins.