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Item # OSP1E201M

Osprey Aether Plus 100 Internal Frame Backpack

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Osprey Aether Plus Backpacking Pack Series

By Troy

Enwild Gear Specialist

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The massive (5900+ cubic inch capacity) and fully-featured Osprey Aether Plus 100 offers a dynamic and adjustable fit, a weight-carrying capacity of up to 70 pounds, and rugged durability for expeditions and gear-intensive, extended backpacking trips.


The massive (5900+ cubic inch capacity) and fully-featured Osprey Aether Plus 100 offers a dynamic and adjustable fit, a weight-carrying capacity of up to 70 pounds, and rugged durability for expeditions and gear-intensive, extended backpacking trips.

Constantly striving to enhance comfort and performance, Osprey has equipped the pack with a 4mm LightWire aluminum alloy peripheral frame and an Airscape injection-molded and die-cut framesheet. This design ensures optimal balance and weight distribution. The textured backpanel and foam harness maximize comfort and help reduce heat build-up between your back and the pack. Further enhancements to the fit are the Fit-on-the-Fly hipbelt and harness. The hipbelt has an adjustable extension and the ability to individually angle reinforced wings to fine tune the fit for any body shape. The shoulder straps have built-in adjustments that can be used to lengthen the shoulder wrap padding for an even more dialed in fit. A sliding sternum strap and adjustable load-lifter straps further enhance fit.

Accommodating backpackers of different heights and torso lengths, the pack is available in your choice of sizes. The Small/Medium size best fits torsos ranging from 17"-20.5" and the Large/Xlarge fits from 19.5"-23".

The pack's large main compartment is reached through a traditional top-loading access point but a zipper on the side of the pack also allows quick panel access to the interior. Additionally, a lower compartment serves as a dedicated spot for stowing your sleeping bag or other clothes and gear. A removable divider enables you to open up the interior to create a single spacious compartment. A large front shove-it pocket utilizes welded stretch woven fabric to serve as a convenient storage spot for discarded layers or other gear. Dual front panel zippered pockets offer even more storage and organizational options. Elastic side pockets are ideal for stashing water bottles or other smaller items. Integrated zippered hipbelt pockets provide a spot to keep essentials close at hand. Side and front panel compression straps enable you to cinch down your pack to keep contents safely and securely in place and also double as lash points for additional gear. A removable top lid with zippered pockets protects the contents of the pack and can be removed entirely to save weight. When the lid is not in use, a streamlined FlapJacket cover still protects the top entry so contents stay secure. The top lid also converts to a DayLid daypack, giving you a smaller pack for side excursions and summit attempts.

Other features include Stow-on-the-Go trekking pole attachments, a protective rain cover, dual ice axe loops with bungee tie-offs, and removable sleeping pad straps. An internal sleeve makes the pack hydration compatible (hydration system sold separately).

The Osprey Aether Plus 100 internal frame backpack is available in your choice of size and color options.

  • Custom Fit-on-the-Fly hipelt
  • Custom Fit-on-the-Fly shoulder straps
  • Injection-molded, die-cut foam Airscape framesheet
  • 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
  • Fabric reinforced front shove-it pocket
  • Large dual-access stretch mesh side water bottle pockets
  • Dual upper/lower side compression straps
  • Dual front panel compression straps with StraightJacket compression
  • Dual zippered hipbelt pockets
  • Dual ice axe loops with bungee tie-offs
  • Zippered sleeping bag compartment with removable divider
  • Removable sleeping pad straps
  • Internal hydration reservoir sleeve
California residents: view proposition 65  Warning

Technical Specs

Best Use
Top Loading w/ Front Access and Lower Sleeping Bag Compartment
Detachable Daypack
Item Dimensions
Small/Medium: 32" x 17" x 16"
Large/Xlarge: 34" x 17" x 16"
Fits Torso
Small/Medium: 17"-20.5"
Large/Xlarge: 19.5"-23"
Fits Waist
One Size
Frame Material
4.0mm LightWire aluminum peripheral frame and Airscape foam framesheet
Hydration Compatible
Maximum Weight
70 lb
Sternum Strap
Yes; Adjustable
Torso Adjustment
Small/Medium: 5980 cu in
Large/Xlarge: 6102 cu in
Limited Lifetime
Internal Frame Backpack
bluesign-approved 210D high-tenacity nylon w/ PFC-free DWR
Item Weight
Small/Medium: 6.18 lb
Large/Xlarge: 6.44 lb
Removable lid converts to DayLid daypack
Raincover included
Sternum strap safety whistle

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