Osprey
Aether Plus 100
Best high-capacity pack for long-distance wilderness expeditions.
The Osprey Aether Plus 100 is a robust internal frame backpack designed for men's backpacking adventures. It offers a generous 100-liter capacity and features a custom-fit system with adjustable hipbelt and shoulder straps for optimal comfort and load transfer. Constructed from durable, bluesign®-approved nylon with PFC-free DWR, this pack is built to withstand rugged trails. Key features include a removable top lid that converts to a daypack, integrated raincover, and multiple attachment points for gear, making it ideal for extended expeditions.
$490.00
Owner Satisfaction
4.6
/ 5
Category Rank
1886
/ 13466
#1886 in Backpacks
Price vs Category Average
+361%
Above average
Load Range
4070.1832
/ - lbs / - kg
Who it's for
- Thru-hikers carrying heavy loads over long distances
- Expedition leaders hauling gear for multi-week adventures
- Organized trekkers needing quick access to specific gear
Who should skip it
- Ultralight backpackers focused on minimizing base weight
- Budget-conscious adventurers seeking entry-level gear
- Weekend hikers needing a nimble, compact pack
Performance breakdown
Load Carrying Capacity
Handles heavy expedition loads with exceptional stability and weight distribution.
Custom Fit Adjustability
Fit-on-the-Fly components ensure a tailored feel for diverse body types.
Durability
High-tenacity nylon construction withstands the harshest backcountry abuse.
Versatility
The convertible daypack lid adds immense value for basecamp excursions.
Access and Organization
Front panel access makes retrieving gear simple without unpacking everything.
Weight Efficiency
Robust features result in a heavier pack weight when empty.
Key Specs
Load Range
40 - 70 lbs. / 18 - 32 kg
Volume (L/XL)
98 L
Dimensions (L/XL)
87H x 42W x 40D CM
Weight (L/XL)
3.036 KG
Material
bluesign®-approved 210D high-tenacity nylon, PFC-free DWR
Capacity
100 L
Weight
6.691 LBS.
Hip Belt
Custom Fit-on-the-Fly Hipbelt
Features
- Removable top lid converts to DayLid daypack
- Included raincover made with PFC-free DWR and bluesign®-approved materials
- Stow-on-the-Go trekking pole attachment
- Floating top lid with lash points
- Integrated FlapJacket cover for lidless use
- Dual front panel zippered pockets for easy-access storage
- Large front panel zip access to main compartment
- Internal hydration reservoir sleeve
What customers say
Customers consistently praise the Aether Plus 100 by Osprey for its exceptional comfort, even when carrying substantial loads on extended trips. Reviewers frequently highlight the pack's superior adjustability and effective weight distribution, which significantly enhances the user experience over long distances. The robust construction and high quality materials also receive widespread acclaim, assuring users of its durability and reliability in challenging outdoor environments. This combination of comfort and lasting quality makes it a highly regarded choice for serious backpackers seeking a dependable, large capacity pack.
Know before you buy
While the 100-liter capacity is designed for extended expeditions, the pack features compression straps to stabilize smaller loads. However, if you aren't carrying gear for multi-week treks, you may find the pack's size and weight excessive for shorter outings.
The top lid of the pack is detachable and includes integrated shoulder straps, allowing it to function as a standalone daypack. This is ideal for leaving your main pack at base camp while you take a lighter load for shorter summit pushes or side excursions.
Yes, the pack features a large front panel zipper that provides suitcase-style access to the main compartment. This allows you to reach items stored in the middle or bottom of your pack without having to empty it from the top.
The Fit-on-the-Fly system allows you to adjust the hipbelt length precisely to your body, which is crucial for transferring weight effectively. When carrying the recommended 40–70 lbs, this adjustability helps prevent pressure points and keeps the load stable on your hips.
The Aether Plus 100 includes an internal hydration reservoir sleeve compatible with most standard bladders. You will need to route the hose through the designated port to keep your water supply accessible while hiking.
If you prefer to hike without the lid to save weight or reduce bulk, the pack includes an integrated FlapJacket cover. This deploys to protect the main compartment opening from the elements while keeping your gear secure.
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$490