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  • Removable hipbelt can be custom molded for a perfect anatomical fit; it offers superior load support, stiffness and padding with dual-density foam for enhanced comfort
  • Osprey-certified custom molding is available in most stores—check your local REI store for a custom hipbelt molding oven
  • Dual-density foam harness with spacer mesh promotes airflow and wicks away moisture during warm weather and intense activity
  • Suspension features a peripheral frame, smooth spacer-mesh back panel, single stay and an internal framesheet
  • Running down the sidewalls, the peripheral frame anchors to the load-lifter straps and hipbelt, transferring the load to your hips and resisting sag
  • HDPE framesheet and a center aluminum stay protect your back from bulky or pointy items and support heavy loads
  • Top lid can be removed and converted into a lumbar pack; hipbelt can be removed from the pack and attached to the lumbar pack for comfortable carrying
  • J-zipper panel access on the front of the pack body makes stowing and accessing your gear a breeze, even when it's buried deep in the pack
  • Externally accessible bottom compartment with a wide mouth and divider accommodates all types of sleeping bags
  • Zippered hipbelt pockets and stretch-woven side pockets keep essentials accessible; stretch-woven front pocket with welded vent accepts Osprey AddOns™ (sold separately)
  • Compression system with 3 horizontal straps and 1 internal strap lets you securely compress the contents whether full or nearly empty, and without sag or load distortion
  • Trekking pole attachment, side gear straps, ice axe tool loops, cord loop attachment slots and removable sleeping pad straps accommodate a variety of alpine gear
  • Hydration-compatible design features reservoir sleeve and dual drink tube exit ports for on-the-go hydration (reservoir sold separately)
  • Osprey Aether 70 pack shaves weight yet remains tough with a 210-denier double-ripstop nylon and and 500-denier plain-weave oxford nylon bottom


View all Osprey Backpacking Packs

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Best Use Backpacking
Frame Type Internal Frame
Gear Capacity (L)
67 liter
70 liter
73 liter
76 liter
Gear Capacity (cu. in.)
4,089 cubic inches
4,272 cubic inches
4,455 cubic inches
4,638 cubic inches
4 lbs. 8 oz.
4 lbs. 12 oz.
4 lbs. 15 oz.
5 lbs. 3 oz.
Adjustable Torso Yes
Fits Torso
16 - 19 inches
18 - 21 inches
20 - 23 inches
22 - 25 inches
Fits Waist/Hips
27 - 31 inches
30 - 34 inches
33 - 37 inches
36+ inches
Material(s) Ripstop nylon/nylon oxford
Frame Material HDPE framesheet/metal alloy peripheral frame
Number of Stays 1 aluminum center stay
Pack Access Top / front
Number of Exterior Pockets 6 + main compartment
Sleeping Bag Compartment Yes
Gender Men's
Rated 5 out of 5 by from Custom Fit for Perfect Awesomeness I went into REI in April for a May trip and this is the pack that was recommended to me. The REI rep invested the time to take measurements and change the hip-belt and harness to larger ones that accommodated my frame. The fit is incredible. Since I told the REI rep that I was new to backpacking, he took the time to load up the backpack with sandbags and showed me how all the different straps work and how they affect where the weight is sitting. That experience was absolutely key to making my first backpacking trip incredible. Immediately after making it home from my first trip I planned another for June. I now have a July and August trip planned.
Date published: 2016-06-25
Rated 5 out of 5 by from Another Great Osprey! Osprey already has an excellent track record with me, but this pack is better than my last. Very sturdy, lightweight, adjustable, and functional. Heat molded hip-belt gives a crazy nice fit. This pack is mainly used for 1-5 night backpacking trips in the Appalachains, and it has served well. Although the rain cover was not included, the one Osprey makes is a really good one. It covers an over-stuffed pack (with sleeping pads strapped to the outside) completely, and it has adequate synch points to keep wind from catching it or collecting snow/rain. I would recommend this as not only a great pack for experienced hikers, but also for beginning explorers as well.
Date published: 2014-01-20
Rated 5 out of 5 by from Solid Pack! I just broke this pack in on a 43 mile Teton Crest Trail trip. Bagged worked perfectly! Straps are solid and compartments are well thought out. easy to adjust while on the trail as load/terrain changed. Works perfect for the gear that I carry, and weighed in at 55lb fully loaded. I think it would be pretty hard to get this bag to rip! I had to drag along some sections of the extremely rocky Paintbrush divide...thinking for sure I would have a least a few small rips..... but NO! The bag held strong! I found the pack most comfortable when I had on a fleece jacket... so perhaps even a small amount of additional padding in the belt/straps would help. Overall a great pack!
Date published: 2013-08-31
Rated 5 out of 5 by from Very comfortable, seems durable I've used this pack on only a couple 3-day trips into the wilderness of MT so far but I've been very pleased. It's a good volume for a three to five day hike and since it's highly adjustable to fit my body well, it's made 6-12 mile days no problem. I got the bladder and rain cover for it and both work great. So far, the materials have been durable and the zippers seem solid, without much snagging. I really like that the top of the pack is removable and has it's own waist belt, so you can use it as a small pack for a day hike from a basecamp. As I get to know the pack more, I'm more and more pleased with it.
Date published: 2013-08-08
Rated 5 out of 5 by from Game Changer I never bother writing reviews but I'm compelled to with this product. It's been 40 years since my last backing trip and that trip was about pain, lots pain from my back pack is what I remember most from that trip. REI Concord fitted me and suggested the Osprey Aether 70.(56 year old fat guy) First trip was an over night hike at Point Reys 18 miles in two day, this pack performed better than my wildest dreams, pack was so comfortable I didn't even bother to take it off during a lunch brake, I over packed, had to carry extra food for someone else and I probably packed a few too many things I didn't need, the pack weight was at 42 lb's at the trail head but the Aether 70 distributed the load extremely well. I'm very satisfied with this pack and would recommend it, I won't wait another 40 years to go on my next backpacking trip just got back and planing another trip.
Date published: 2013-07-16
Rated 3 out of 5 by from Design is tall and narrow. 07/24/2016 I was surprised that this pack as so narrow that I could not fit my BearVault 500. It would not slide down to the bottom or the middle. Luckily the it could barely be squeezed into the top. My previous pack, Arcterryx Khamsin 62, was chosen to fit the bulky BearVault. My wife has an older Ariel 65, and the BearVault fits in easily. Apparently a re-design made all the packs narrower and TALLER. The two inches in increased frame height makes it impossible (even without a helmet) to look up merely with only a tip of the neck. I now have to lean the torso back. Does anybody find this trade-off height vs pack width a practical improvement?
Date published: 2016-07-24
Rated 5 out of 5 by from Osprey does it again. I really didn't want to like this pack. I wanted to get it home and find that it was only marginally better than my old pack. I really wanted to say that it was too expensive for what it is, I really wanted to tell you that, but I can't. This pack is amazingly comfortable. I've done a few hikes with it loaded up with camping and photo gear, about 20lbs of each, and it feels like I have a lot less on my back. It's not as east to load as my old pack, but I'll look past that since it does have a hydration sleeve. I know they all do nowadays, but that's just how old my other pack is. I'm looking forward to more trips with this pack.
Date published: 2014-01-09
Rated 5 out of 5 by from Osprey Aether 70 Delivers Bigtime! I bought this pack a few months ago for a multiday trip in Kings Canyon National Park. Before I left REI in Manhattan offered free fitting and heat molding of the hip pads. I stopped in and the Osprey rep was just fantastic! He set my pack up for my use and went through all the cool little details and added features of the pack. Glad I spent that hour with him. This translated into an incredible 2 day overnight hike in KCNP. I was a little heavy due to carrying a Bear canister but even carrying close to 40 pounds up and down some very steep trails this pack came through with flying colors. I was especially impressed with how well this pack cinches down when fully loaded eliminating load shift. Easy access to all compartments was also appreciated. I am now back in NJ looking forward to extended backpacking over the next six months. Just can't say enough good things about this pack!
Date published: 2013-04-25
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Can I use this pack as a carry-on on a plane?

Asked by: kyleandshaina
This pack measures approximately 31.5" X 15.75" X 13.39". Most domestic airlines explain that the total linear inches for carry-on bags is 45 inches, however, the bag must be no longer (or taller) than 22 inches to stow in airplane overhead compartments. This pack would be too long, even if you found a way to compress it somewhat.
Answered by: REIservice
Date published: 2017-02-20

I was measured by an REI employee at the Atlanta (I 85 store) for an Osprey Aether 70 (#846.401) and told that I needed a medium based on torso measurement. But I have a waist of 35 inches. Will the medium fit me/do I need a medium torso/large belt?

Asked by: John Cromartie
Based on the measurements you provided, we recommend ordering the Aether 70 Pack in a medium and the Osprey IsoForm4 CM Custom Moldable Hipbelt in a large. Once you receive the pack and the hipbelt, you can switch out the belts and return the medium belt that came with the pack for a full refund.
Answered by: REIservice
Date published: 2016-11-14

Do you guys plan on carrying the Aether 70 in Small?  The medium doesn't fit me as well as the small one does.

Asked by: mvtx87
As of November 2016, we do not plan to stock the small size. All available sizes are on our website.
Answered by: REIservice
Date published: 2016-11-13

how do I order two separate sizes for the hip belt and pack? for instance a L pack with a medium hip belt?

Asked by: ramsdl52
The best way would be to order an Aether 70 in the large size along with the Osprey IsoForm4 CM Custom Moldable Hipbelt in a medium. Once you receive both items you can swap out the hipbelts and return the large belt off of the pack for a full refund.
Answered by: REIservice
Date published: 2016-11-14

Will a BearVault 500 fit inside the Aether 70?

Asked by: AndersT
​The BearVault 500 will fit inside the Aether 70 pack.
Answered by: REIservice
Date published: 2017-01-23

Why would you pick the Atmos AG 65 over over the Aether 70? And, why would you pick the Aether 70 over over the Atmos AG 65?

Asked by: SAMIR
The Aether 70 Pack has a more robust replaceable hipbelt and shoulder straps that can be heat molded to your body. The Aether is add-on compatible which allows you to attach the Daylite daypack to the outside of the pack. The Aether has a heavier duty nylon on the bottom and main portions of the pack. The Atmos 65 is lighter in weight and is more ventilated. The Atmos also features Osprey's Anti-Gravity shoulder harness which allows you to fine tune the fit of the pack.
Answered by: REIservice
Date published: 2017-03-07

How does the Osprey Aether 70 compare with the REI Traverse 70 in terms of comfort, durability etc.?

Asked by: IrishRover
The Aether 70 and Traverse 70 Packs are both very comfortable and durable. Both packs offer an adjustable fit so you can ensure the pack fits you comfortably.
Answered by: REIservice
Date published: 2016-11-13

I noticed that some of the pictures show the Aether 70 in Gold. Any plans to carry this color choice?

Asked by: cscott216
​The Aether 70 Pack is not available in gold. The color you are seeing is an older color called Tundra Green and we are having those images removed.
Answered by: REIservice
Date published: 2016-11-16
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