Two backpacks worth lining up side by side. The Unbound 55 takes a modest overall edge, led by low weight, but the Southwest 55 has its own case.
| Hyperlite Mountain Gear Unbound 55 | Hyperlite Mountain Gear Southwest 55 | |
|---|---|---|
| GearScore | 68✓ | 68 |
| Capacity | 55 L | 55 L |
| Weight | 1 lb 13 oz✓ | 1 lb 15 oz |
| Rated load | 40 lb | 40 lb |
| Fabric denier | n/s | n/s |
| Price | $420 | $420 |
| Type | Ultralight | Ultralight |
| Frame | Internal | Internal |
Highlighted cells mark the better spec: Unbound 55 in blue, Southwest 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 Hyperlite Unbound 55 and Hyperlite Southwest 55 take different routes to the same job. The Unbound 55 wins on low weight, and the Southwest 55 pushes back on value.
The Unbound 55 is 2 oz lighter. Their GearScores land within a couple of points (68 vs 68), so neither runs away with it.
Pick the Unbound 55 if you care most about low weight, which makes it the better call for counting grams on long miles. Pick the Southwest 55 if you would rather save the difference.
The Hyperlite Unbound 55. It is 2 oz lighter than the Southwest 55.
They are nearly tied at 68 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 Unbound 55 for low weight, or the Southwest 55 for the price. The spec table above shows exactly where each wins.