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Osprey Aether AG 85 Internal Frame Backpack


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Item # OSP1A201M
Combining its hard-earned reputation as a rugged load-hauling option for extended backpacking trips with the revolutionary Anti-Gravity suspension the Osprey Aether AG 85 offers a dynamic responsive fit 5000+ cubic inches of storage capacity and a weight-carrying capacity of up to 60 pounds!
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Combining its hard-earned reputation as a rugged load-hauling option for extended backpacking trips with the revolutionary Anti-Gravity suspension the Osprey Aether AG 85 offers a dynamic responsive fit 5000+ cubic inches of storage capacity and a weight-carrying capacity of up to 60 pounds!

Osprey's innovative Anti-Gravity suspension system equips the pack with weight-carrying efficiency breathability and a contoured fit. A broad-mesh tensioned backpanel stretches all the way out across the lumbar portion of the pack. Though the pack maintains constant responsive contact with the wearer warm air can escape freely because of the separation caused between the mesh and the pack itself. Beneath the mesh a peripheral LightWire aluminum frame. A sliding sternum strap and adjustable load-lifter straps further enhance fit.

Accommodating backpackers of different heights the pack is available in your choice of sizes. The Small size fits torsos ranging from 16”-19” the Medium fits from 18”-21” and the Large accommodates torso lengths ranging from 20”-23”. An Anti-Gravity IsoForm harness and a fully-padded moldable IsoForm hipbelt maximize performance fit and comfort. These components are interchangeable. NOTE: The Aether AG 85 ships standard with component sizes that match the torso size or “style” of the pack. If you require customization of components please leave detailed instructions about what size hipbelt and/or harness you need in the “Order Comment” field on the “Order Review” screen at checkout or call us at 1.800.617.0643 to place your customized order directly with one of our Gear Specialists.

The pack’s large main compartment is reached through a traditional top-loading access point but a large J-shaped zipper on the front of the pack also allows quick 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 pocket utilizes welded stretch woven fabric to serve as a convenient storage spot for discarded layers or other gear. Elastic side pockets are ideal for stashing water bottles or other smaller items. Integrated hipbelt pockets provide a spot to keep essentials close at hand. Side 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. Buckled straps that pass over the front of the packbag are designed to further enhance the compressibility of the pack and provide yet another place to lash gear. A removable top lid protects the contents of the pack and can be removed entirely to save weight . Adding increased versatility the lid also serves as a streamlined stand-alone daypack with its own minimalist shoulder straps an adjustable sternum strap and an internal hydration sleeve.

Other features include integrated Stow-on-the-Go trekking pole loops ice axe loops with bungee tie-offs removable sleeping pad straps and an internal sleeve that makes the pack hydration compatible (hydration system sold separately).

The Osprey Aether AG 85 internal frame backpack is available in your choice of size and color options.

  • Removable top-lid converts to DayLid daypack
  • Dual upper side compression straps
  • Dual access side stretch mesh pockets
  • Lower Inside-Out compression straps
  • Zippered hipbelt pockets
  • Stow-on-the-Go trekking pole attachment
  • Additional main compartment access
  • Large stretch mesh front panel pocket
  • Dual front compression straps with StraightJacket compression
  • Dual ice tool loops with bungee tie-offs
  • Zippered sleeping bag compartment with removable divider
  • Removable sleeping pad straps
  • Integrated FlapJacket cover for lidless use
  • Internal hydration reservoir sleeve
  • Large front J-zip access to main compartment



Best Use Backpacking
Access Top Loading w/ Side Access and Sleeping Bag Compartment
Warranty Limited Lifetime
Volume Small: 5004 cu in
Medium: 5187 cu in
Large: 5370 cu in
Type Internal Frame Backpack
Sternum Strap Yes; Adjustable
Maximum Weight 60 lbs
Material Main: 210D Nylon Dobby
Accent: 210D High Tenacity Nylon Shadow Box
Bottom: 500D Nylon Packcloth
Item Weight Small: 5.32 lbs
Medium: 5.37 lbs
Large: 5.42 lbs
Torso Adjustment Yes
Hydration Compatible Yes
Frame Material Aluminum
Fits Torso Small: 16"-19"
Medium: 18"-21"
Large: 20"-23"
Dimensions 34" x 17" x 15"
Detachable Daypack Yes


Real Customer Reviews

Average Rating:
(based on 7 real customer reviews)

7 Items

Light Comfortable and Big
Reviewed by Laurent F. - April 13, 2018

Likes: Love the design, the size, the comfort on the shoulders and especially the daypack that is a real backpack.

Dislikes: Nothing yet :)

Just what I was looking for!
Reviewed by Anthony D. - April 6, 2018

Likes: Extremely well built and the suspension system is pure heaven when the pack is loaded up. I'm actually having trouble loading it all the way up, gear disappears into it and there always seems more room to put something else in there. I'm 5'9", 190# with a 30" waist - the Medium fits perfectly and the hip belts from the get go are just right. I love the bottom sleeping bag compartment, and the hydration system (separate purchase) works very well. It's a good looking, streamlined pack that will comfortably carry more than I should actually put into it.

Dislikes: It should have included a pack cover, but not a deal breaker...

Love this Pack
Reviewed by Sean - March 26, 2018

Likes: Finally upgraded my 20 year old LoweAlpine pack. HOLY COW this pack is amazing. I hardly know what to do with the space and my back doesn't ache the entire week!

Dislikes: NONE!

Great backpack with lid converted to daypack
Reviewed by Alice L. - February 12, 2018

Likes: Lid converted to daypack for side trips. It is part of the lid and lightweight

Dislikes: The pack itself is rather heavy but it comes with lots of pockets and straps which allow you to carry more gear.

Very large backpack.
Reviewed by Ronald D. - July 3, 2017

Likes: This is meant for some seriously long distance hiking. Super comfortable backpack.

Dislikes: The 85 was too big for me I ended up going with the 70, I'm six foot one and my size is a medium which makes a big difference from a large on how it sits on your shoulders.

A comfortable big load hauler
Reviewed by James W. - June 14, 2017

Likes: Very comfortable hip belt and shoulder straps and AG back panel. Nice and easy to reach side mesh pockets. Transfers load well to hips. Very adjustable and modular. Having the zipper on front panel to access main pack is convenient.

Dislikes: Convertible top lid/daypack is nice but adds about 13 oz to the pack weight. I have a 31 inch waist and the small waist belt is too small and the medium is a bit too big. I went with the size large to fit my and my kids' gear without having to bring the top lid.

Excellent Pack and Comfortable for its Size
Reviewed by David B. - March 30, 2017

Likes: I LOVE the colors of this pack. I'm not a fan of the bright and wild colors on some packs, but this one is fantastic. It's obviously made of great, durable material. Here are some thinks I love about the pack:
- The shoulder straps are SUPER beefy
- Great zippers that are easy to use
- Versatility of the top lid (I love how it turns into a backpack instead of a fanny or shoulder strap)
- Lots of compression straps
- The anti-gravity suspension material has made a more durable upgrade from that on the Atmos AG
- Internal AND external hydration sleeve
- Deep, external side pockets

Dislikes: - The hip belt can feel uncomfortable before it has had a chance to break in.
- The zippered waist pockets can be a little hassle to zip completely closed while wearing the pack (I have yet to find a pack where this isn't an issue though...)
- It's not as comfortable and doesn't feel as supportive as the Atmos AG suspension system. It's still better than any other pack I've worn of its size though.

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