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  • Top-loading main compartment with fully padded, 3D suspension contouring promotes ventilation and upper body mobility
  • Upper and lower side compression straps reduce bulk and stabilize loads for optimal weight distribution and carrying comfort
  • LightWire™ peripheral frame, structural load lifter bars and a suspended mesh wrap hipbelt, provide exceptional load transfer and optimal comfort
  • Fully adjustable gender specific Anti-Gravity™ mesh wrap hipbelt provides optimal load transfer and comfort
  • Anti-Gravity ventilated mesh back panel contours automatically to the body, providing outstanding fit and unrestricted movement
  • Removable floating lid contains 2 zippered pockets for quick-access essentials
  • Integrated FlapJacket™ protects contents from foul weather and rain during lidless use
  • Dual stretch-mesh side pockets, zippered hipbelt pockets, and large front stash pocket offer additional storage and organization
  • Back bottom contains zippered sleeping bag compartment and removable sleeping pad straps
  • Pack exterior also features 2 front panel zip pockets, ice tool loops with bungee tie-offs and trekking pole attachment
  • Hydration sleeve and ports (reservoir not included)


View all Osprey Backpacking Packs

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Best Use Backpacking
Frame Type Internal Frame
Gear Capacity (L)
62 liters
65 liters
68 liters
Gear Capacity (cu. in.)
3,783 cubic inches
3,967 cubic inches
4,150 cubic inches
4 lbs. 3 oz.
4 lbs. 6 oz.
4 lbs. 8 oz.
Weight - Metric
1.92 kilograms
1.98 kilograms
2.04 kilograms
Adjustable Torso Yes
Fits Torso
16 - 19 inches
18 - 21 inches
20 - 23 inches
Fits Waist/Hips
24 - 45 inches
24 - 45 inches
29 - 55 inches
Material(s) 100-denier x 630-denier nylon dobby/420HD nylon packcloth
Frame Material LightWire
Number of Stays 1 peripheral hoop
Suspended Mesh Back Panel Yes
Pack Access Top/bottom
Number of Exterior Pockets 9
Sleeping Bag Compartment Yes
Gender Men's
Rated 5 out of 5 by from Best Bag Around In my opinion this is the best bag you can get for the time being. Its by far the comfiest bag I've ever owned, making my heavy loads seem non existent. I ended up getting the 65 over the 50 due to the fact that the 65 has the outer sleeping pad straps and the 50 doesn't... I think thats a big con to the 50 (in my opinion). The extra space doesn't seem to get in my way much, and you can compress this bag down to such a manageable size you don't have to worry about the bag flapping around while on the trail. The only down side to this pack would be the water bottle sleeves... Good luck fitting a Nalgene bottle in them with a decently loaded pack.
Date published: 2016-05-02
Rated 5 out of 5 by from Outstanding pack! This pack is outstanding, like I said in the title. Long story short: I bought the smaller one on the website, too small. Took it back to the store and upgraded to the 65. Worth it. Pike's Peak, supposed to be an easy hike up Barr's Trail. It was until the blizzard hit and we lost the trail. 18 hours later, we hit the summit. I never had an issue with the pack (45 pounds). It felt great on my body and carries the weight really well, especially compared to my other pack, which is an Army rucksack. The only downside to his pack are the pockets on the hip. They're too small. Besides that, great pack.
Date published: 2015-07-23
Rated 5 out of 5 by from Most comfortble pack I've ever had Bought this pack to use while Osprey is replacing my Aether 70. Very comfortable. Carried 40 lbs on 3 day cross country trip in Yosemite. No shoulder pain or lower back pain as with the Aether, but that pack was 6 years old. I hope the Atmos 65 AG is the one Osprey will replace my old pack with. Only problem is the belt pockets are tight and the zipper is impossible to pull closed with one hand while the pack is on. The material bunches up and doesn't allow the zipper to close. Had to have a companion hold the fabric while I pulled the zipper closed. Great design Osprey. The pack is as close to anti gravity as you can get outside of science fiction.
Date published: 2016-07-10
Rated 5 out of 5 by from Great Pack I bought this pack specifically for a trip to Peru to hike the Inca Trail to Machu Picchu. My old pack was too large, considering that I would not need to carry a tent or food (provided by tour company). My old pack was also considerably heavier than this one. I did several hikes with the pack to make sure it was adjusted correctly and to allow me to get used to it. I was impressed as it seemed to perform as the majority of views indicated. In Peru, it performed without a hitch. It had plenty of room and the suspension was great. I was able to keep my balance with ease over all manner of surfaces - dirt trail, stone trail and stone stairs. I am very happy with my purchase.
Date published: 2015-09-17
Rated 5 out of 5 by from The New Standard A great fitting pack with a great suspension. I just took this pack out on its first trip this past weekend. It rained the entire time so it was a huge plus to have the included rain cover which is exclusive for this model within the Osprey line. I was skeptical of the 3D suspension but it is not a gimmick, i wouldn't be surprised if it became the standard at least within the Osprey lines. Very adjustable to custom fit and the only pack i've used on a trek and come back with no shoulder pain or soreness in the upper body. It is a plus that it is one of the lightest packs outside of UL options.
Date published: 2015-03-17
Rated 5 out of 5 by from Osprey Atmos 65 AG I compared several packs including the Gregory Baltoro 65 and the Arc'teryx Altra 65 before purchasing the Osprey Atmos 65. They are all quality packs, well built with great features. I would recommend that anyone considering purchasing any of these packs be fitted and test the pack with a minimum of 30 lbs. I was looking for a pack that could accommodate seven days of camping gear and hiking supplies. At 5'5" and 155 lbs, the Osprey was the most comfortable for me with a load of 45 lbs. The folks at REI were very knowledgeable and extremely helpful in helping me select the right pack. Thank you.
Date published: 2016-04-17
Rated 3 out of 5 by from Osprey Atmos 65 I used the product twice, Gilberts Peak Utah and Timpanogos Utah. It was a very comfortable fit. Felt extremely light on the back. It was though a bit small and I wish they made a larger size. Since the size is limited I will be exchanging for a Xenith 75. My biggest complaint is that the location of the bladder, inside the pack, makes if very inconvenient for refills, you must empty out a good portion of items in the pack to pull it out and having it inside the pack, takes away space from other items. I would buy again if the water pouch was accessible from the outside of the pack and I would buy for a larger capacity design.
Date published: 2016-03-21
Rated 5 out of 5 by from Love it I have had this pack for about 2 weeks now. In that time I have take several day hikes. I have it packed to the max, preparing for an AT thru-hike. I am extremely happy that I held out and waited for this pack. I am 6' and got the largest pack. The way way the shoulder straps slide up and down is just ingenious. It really makes this more like a custom pack. When you are walking with it, it is almost effortless. I have mine packed with about 40lbs, and when walking I can't even tell that there is more than a light day pack on.
Date published: 2015-02-27
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The sizes small, medium and large seem to refer to the capacity of the pack. Would those sizes also correspond to the size of the hiker? I am 5'8" and wondering about the difference between medium and large as both carrying capacity and good fit.

Asked by: dancinjive
The size is based off of torso size only.  While yes, larger sizes do have larger capacity, you need to buy the size according to your torso size, which is unrelated to your height and weight.  Check the specifications tab on the REI's page for the product for more details, but you need to go to REI and get your torso measured to make sure you get the right size pack.
Answered by: BackpackingasmuchasIcan
Date published: 2015-09-20

I'm measuring about 18.25...Would a small be a risk, or should I go with a medium?

Asked by: Grant3
I just purchased this pack today. I measured out at 18" torso and purchased a Medium pack. With 25lbs. of weight in it, it felt great. I'm looking forward to using this pack!
Answered by: Tex152
Date published: 2017-04-09

I'm 6'1" with torso length of 19" so I should get medium. But would it be much more uncomfortable if I get large? I'm only 1" off from the min torso length for large and the pack offers better adjustability on shoulder strap location. I'd love extra 3L

Asked by: Stimpy
Based on your torso length, we recommend staying with the medium in the Atmos 65 AG Pack. While the large is only off by one inch, going with the large could cause the pack to be uncomfortable and not rest properly on your hips with a heavier load.
Answered by: REIservice
Date published: 2017-05-03

Now that the rainfly/drysack aren't included with the bag, are there specific rainflies/drysacks for the Osprey AG?

Asked by: Jfourest
I chose the Osprey UltraLight Pack Raincover X-Large for my Atmos 65, even though the Large size fit it, because the X-Large better accommodated exterior gear like sleeping pads, etc. The X-Large still fit nicely without looking overly large (as it has a built-in elastic shock cord.) I considered other, less expensive rain covers REI had in their store, but none fit as well, and most weighed more & had more bulk when stuffed in their pouches. In the end, i felt it was worth a few extra dollars more for less weight & bulk, and a tailored fit.
Answered by: Oregon Hawkeye
Date published: 2017-04-05

Would the REI polar pod (regular size), which is compressed in the REI 16 ltr compression sack fit into the dedicated sleeping bag compartment of this pack?

Asked by: hoovachi
Yes, the Polar Pod in the 16 liter compression sack will fit inside the sleeping bag compartment on the Atmos 65 AG Pack.
Answered by: REIservice
Date published: 2016-06-16

I pre-ordered but now I'm noticing a lot of discrepancies. One is colors, no biggie. But does the lid on the 65's have two straps on each side or one? And is the ice pick loop above or below the sleeping bag zipper? All the pics are a little different!

Asked by: Seamunster
I answered my own question. On Osprey's site they have updated pictures for all bags which only now look identical. The graphite grey bag pictured might be a prototype bag they sent early as a preview. Can't wait for it!
Answered by: Seamunster
Date published: 2015-09-20

Why is Gray not available in L size?

Asked by: BEDELLVS
We are currently sold out in the Atmos 65 AG EX in the grey size large. We are waiting on additional stock.
Answered by: REIservice
Date published: 2015-09-20

How much weight is saved by removing the lid?

Asked by: kdgrant6
The lid of the Atmos 65 AG Pack weighs 6 oz.
Answered by: REIservice
Date published: 2016-05-30
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