The Exos 58 is Osprey's thru-hike pack. At 2.33 lb stripped, it's a full pound and a half lighter than the Atmos AG 50, while keeping Osprey's All Mighty Guarantee and the AirSpeed ventilated backpanel. The capacity (58L) covers most ultralight 5-7 day food carries. Pay the trade-off in load capacity — beyond 35 lb the suspension starts to feel taxed, and the Gregory Baltoro 65 or Deuter Aircontact Core handle that range much better.
Strengths
- +Stripped weight of 2.33 lb — lightest pick from a major brand in this round-up
- +Industry-leading comfort-to-weight ratio for thru-hike applications
- +100% recycled body fabric — environmental credentials match the Atmos AG
- +AirSpeed trampoline backpanel maintains ventilation while shedding weight
- +Osprey All Mighty Guarantee covers it the same as the heavier Atmos AG
Watch-outs
- −30-35 lb max comfortable load — well below the Gregory Baltoro 65's 50 lb
- −Mesh-heavy build is less abrasion-resistant than the Deuter Aircontact Core 50+10
- −Fewer organizational pockets than the Osprey Atmos AG 50
- −$260 MSRP is steep for an ultralight pack
How it compares
Lightest major-brand pick here. Lighter than the Osprey Atmos AG 50, Gregory Baltoro 65, and Deuter Aircontact Core 50+10 by 1.5-3 lb. Granite Gear Crown 3 60 weighs about the same (2.4 lb) but at a lower price. Loses to every other pick on load capacity above 35 lb.
Who this is for
At a glance: thru-hikers and weight-conscious backpackers on the AT, PCT, or CDT who carry 30 lb or less.
Why you’d buy the Osprey Exos 58
- Stripped weight of 2.33 lb — lightest pick from a major brand in this round-up.
- Industry-leading comfort-to-weight ratio for thru-hike applications.
- 100% recycled body fabric — environmental credentials match the Atmos AG.
Why you’d skip it
- 30-35 lb max comfortable load — well below the Gregory Baltoro 65's 50 lb.
- Mesh-heavy build is less abrasion-resistant than the Deuter Aircontact Core 50+10.
- Fewer organizational pockets than the Osprey Atmos AG 50.
Rating sources
Our 4.5 score is the average of these published ratings. More about methodology.
