Side-by-side comparison based on expert reviews and community consensus.
Gregory Baltoro 75 / Deva 70
Best for Heavy LoadsHyperlite Mountain Gear Southwest 55
Best UltralightPrice
$228-$370
$349-$399
Summary
Extra-cushioned hip belt, shoulder harness, and back panel make the Baltoro 75 (men's) and Deva 70 (women's) the most comfortable option for carrying 40-50 lb loads on week-long trips. The ultraplush lumbar pad molds to your back and prevents hip belt drift.
Sub-2-pound Dyneema construction is fully waterproof, tear-resistant, and rated to carry 40 lbs — a combination no other ultralight pack matches. The go-to choice for serious thru-hikers on the PCT, AT, and beyond.
Pros
- Ultraplush lumbar pad molds to lower back and prevents hip belt from sliding under heavy loads
- Comfortably carries up to 50 lbs — more than most packs on this list
- Available in multiple torso sizes (S/M/L) for precise fit
- Highly rated by REI staff and customers: Baltoro has 4.7/5 stars from 126 reviews
- Under 2 lbs (1 lb 13.7 oz) with Dyneema fabric that's fully waterproof and tear-resistant
- Rated to carry loads up to 40 lbs — far more than most ultralight packs (typically 30-35 lbs)
- Removable aluminum stays, foam back panel, and wide supportive hip belt for load transfer
- Available in 40L, 55L, and 70L capacities
Cons
- Heavy at 4 lbs 12.8 oz (S) to 5 lbs 6.4 oz (L) for the Baltoro 75
- Overkill for weekend trips or lighter loads under 30 lbs
- Premium price around $370
- Expensive at $399 — nearly twice the cost of the REI Flash 55
- Minimal organization: lidless design with streamlined storage may shock traditional backpackers
- Dyneema back panel offers poor ventilation — gets sweaty in hot climates
Our take
If you're going out for 7+ days or carrying winter/climbing gear, the Baltoro/Deva is the pack. Yes, it's heavy — but when you're hauling 45 lbs, the extra cushioning pays for itself in spinal health.
If you're logging serious miles and want the lightest pack that won't fall apart, the Southwest 55 is the answer. It's expensive and minimal, but Dyneema's strength-to-weight ratio is in a class of its own.
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