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Osprey Packs Atmos AG 65L Backpack

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    65 Reviews


    Enjoy the journey.

    Backpacking isn't the most enjoyable thing when all you can think about is getting to your campsite and ditching your pack. The newly redesigned Osprey Atmos AG 65 Backpack features Osprey's Anti-Gravity Suspension system, so you can take your mind off your aching back and enjoy the views while you hike. The system places a continuous panel of lightweight mesh from the top of the back to the hips for a seamless design that automatically contours to your back. Not only does this make the pack more comfortable, but it increases your range of movement. On top of that, the Atmos AG has an adjustable harness system, so you can dial in the perfect fit for your individual torso size.

    Built for multi-day backpacking trips, the Atmos AG 65 Backpack has everything you'd expect from serious mountain pack. An internal hydration sleeve lets you fit the pack with your favorite hydration system. A top access point makes for easy packing, while the floating lid adjusts to make room for extra gear on big trips. The lid can also be removed to save weight for those hard summit pushes. Two front panel pockets stash extra layers, maps, and a few snacks, while multiple gear loops allow you attach your trekking poles and ice axe.

    • Award-winning backpack built for Pacific Trail thru-hikers
    • 65L capacity suitable for more minimalist-minded backpackers
    • Anti-Gravity suspends mesh off the supportive frame for comfort
    • Fit-on-the-fly waist belt allows full adjustments on the trail
    • Removable top lid reduces weight for shorter trips
    • Compatible with hydration reservoirs, trekking poles, and ice axes
    • Item #OSP002J

    Tech Specs

    [main] 100D x 630D nylon dobby, [accent] 210D high-tenacity nylon, [bottom] 420HD nylon packcloth
    [small] 62L (3783cu in), [medium] 65L (3967cu in), [large] 68L (4150cu in)
    Waist Belt
    Hydration Compatible
    Reservoir Included
    Rain Cover
    sold separately
    Weight Capacity
    50 lbs
    [medium] 33 x 15 x 15 in
    Claimed Weight
    [medium] 4 lbs 6 oz
    Recommended Use
    backpacking, hiking & camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Most Comfortable I have ever used

    • Familiarity: I've used it several times

    This pack is hands down, the most comfortable pack I have ever worn. the suspension system evenly distributes the weight which allows you to carry a full pack all day without getting hot spots.
    the 65L has worked great for me on week long backpacking trips and long hikes to the crag.
    Multiple pockets makes organizing gear easy.
    I absolutely love the removable brain. When I am trying to go fast and light I can leave the brain at home and the pack still functions and looks great.
    Lastly, the outer mesh pocket is perfect for storing an extra layer and or those items that you may need throughout a day of hiking and makes it easy to get those items in and out quickly without digging through your entire pack.

    Solid bag

    • Familiarity: I've used it several times

    This is my new personal favorite and bag to go when leaving town for those long weekends in the country. It's so convenient with all the extra pockets and loops. I only wish it had included the rain cover, which I got for free on a promo anyway. Also, I found it a little heavy when empty but it made no difference once it was fully loaded. Other than that, I do recommend!


    • Familiarity: I've used it several times

    I have been using the Atmos AG 65 all season and over all I really am happy with it. A few quick details on how I have been using it. A total of 5 trips been from 8 to 12 miles per trip, usually one night, pack weight was 35 lbs on the low side and one trip around 50 lbs. The harness and compression system provide for a very comfortable, stable ride on the trail.
    Here are some specifics I think other shoppers should be aware of.

    I had been back packing with a Gregory Forester and the difference in on trail comfort is hard explain. The Anti-Gravity suspension is with out question the most comfortable suspension system I have hiked with. The mesh back panel is cool and provides a great cushion under load. For me, comfort with the harness and suspension system made up about 95% of my decision when I was making a decision
    The over all build quality is excellent, as expected. Premium materials and construction result in pack that should last for years
    There are plenty of storage pockets and gear attachments close at hand allowing for excellent organization when packing
    Trekking pole attachments are really well designed and the shock cord tie outs hold the poles in place securely
    Large mesh pocket on the front is great for stashing maps, binoculars, rain gear, etc.

    The zippered pockets on the hip belt are tricky to close, once zipped fully open it requires 2 hands to close. One hand to pull the zipper and the opposite hand to hold the end of the zipper to create the needed tension.
    The mesh pockets on either side are large and have openings on both the tops and sides, however they are really difficult to use while wearing the pack. I use these to hold external water in Platypus 1 litter SoftBottle's. Usually I have to have one of my kids stuff them back in until the SoftBottle is about half full, then I can wiggle it in myself.
    The bottom of the pack itself curves up and away from the hip belt creating an rounded bottom. When you take the pack off, you have to lean it against something with the suspension system facing away from whatever you are leaning it against in order for the pack to stand upright. Not a big deal if you are just taking a break on the trail, but not great when you are in camp and are getting in and out of the pack.
    As I mentioned above the comfort and fit of the harness and suspension system was far and away the most important decision factor for me, and this pack is at the top of the heap, no question about it.

    This Bag Too Good??

    Totally impressed with the design and thought that went into this pack. Please check out my in depth review below for a full list of specifications and to hear the things that I Love/Don't Love about this bag.

    Hey Ari, Leta here with Osprey. Thank you for the thoughtful review here. I am aware of some of the cons you describe, so thank you. The raincover was a tough one, and we could include, but the price would have to go up, simply because it adds more cost to the bag. We chose to allow people to buy it separately if they needed it, but it is a valid point.

    Thanks again for the video - very cool that you took they time to do this!
    Osprey Rep

    Great pack!!

      I have been backpacking since I was four years old. I am also in the US Army and I have never wore a better pack. The Anti-Gravity system is a step in backpacks like the iPhone was to cell phones! The waist band fits perfectly and I like that I can adjust it so fast. I am 6'1", 195 lbs, so I got the large pack and there is great organization with all of the pockets (including the waist pockets that in reviews said are too small to fit much. I don't have any issue with them). I fully recommend this pack to any type of hiker out there! Happy trails!

      Best Pack Hands Down

      • Familiarity: I've used it several times

      This is the absolute best backpack I have ever used in any of my lifetimes. The construction is among the best I’ve seen. The ample storage options on-board are well thought out. I have used it as checked luggage flying and it survived with flying colors. Perhaps the main reason that I will only use Osprey packs going forward is the fact that they offer an unconditional lifetime guarantee on all of their packs. Well worth the peace of mind in my opinion. Get one and you will not ever use another pack brand.

      Best Backpack I've Ever Owned

      • Familiarity: I've put it through the wringer

      Definitely my go-to pack for any overnight backpacking trip. I've used it on several week-long trips through the Wind Rivers and the Uintas, as well as plenty of overnighters around Utah.

      Extremely comfortable (I've used it with 50lbs+)
      Suspension distributes weight perfectly
      Good size
      Loads of convenient pockets
      Loads of convenient side straps for tripods, fishing poles, etc.
      Very durable- I haven't always been kind to this pack and I haven't seen a tear yet.
      Suspension system reduces sweat against your back
      Water-bottle side pockets + integrated camelbak pocket are awesome

      Creaks while I hike

      All in all I'd recommend this backpack to anyone who is looking to buy a medium-size backpacking pack.

      An all around stellar backpack

      • Familiarity: I've put it through the wringer

      Whenever I leave my house for a backpacking trip, my Osprey is always with me. Whether it be the lightweight design, comfortable weight distribution, or the ample pockets, I frequently find myself gawking over the Osprey Atmos 65 L.

      Fairly Lightweight
      Awesome weight distribution
      Comfortable fit
      Top of the line construction material
      Conscious placement of pockets and zippers
      Aesthetically pleasing
      Dries quick

      A little on the heavy side for thru hiking
      Too many pockets (if you hate pockets)

      All in all, the Osprey Atmos 65L is a great gear choice for beginnning backpackers and seasoned veterans alike.

      Great Pack

      • Familiarity: I've used it several times

      Instantly fell in love with this pack when I tried it on. The AG suspension system is top notch. Able to fit all my gear and them some without feeling like your carrying around bricks. If your looking for a pack that can do it all then look no further. Do your self a favor and try it out. You will have no regrets.


      • Familiarity: I've used it several times

      What a great pack. It distributes the weight of whatever you decide to pack so well that you forget you have it on. A ton of room for whatever you may need while out in the wilderness. I was able to fit ALL of my hiking/camping gear inside without an issue. Even with it filled to the max, it feels feather light.

      Would definitely recommend for anyone looking for a pack that can do it all.

      Don't Make a Mistake by Not Buying This!

      • Familiarity: I've put it through the wringer

      This is the best pack you can buy whether you are just getting into backpacking or if you are looking to replace an older pack.

      I was very, very reluctant to stop using my passed down Dana Design. I felt almost like a traitor for going away from the legendary brand... But all of those feelings disappeared five minutes into using this pack for the first time. All of what is said about making 45 lbs feel like 30 is true. I did not develop any hotspots on my back, sweat spots or overall discomfort after hours of use. I couldn't be happier with a single piece of gear.

      The gear organization is top-notch. Trekking poles, ice axe, foam sleeping pad stored externally all stay tight and organized. The two outside storage zip-compartments fit emergency storm protection and mid layers with easy so you don't have fuss with the main storage compartment.

      I recommended this pack to a friend who was just starting to get into backpacking and he feels the same exact way about the pack. Be smart, get this pack, it will be the biggest favor you can do yourself.

      Very comfortable. Best packpack by far

      • Familiarity: I've put it through the wringer

      I love the AG system by Osprey. It makes a fully loaded pack seem half the weight.

      I overloaded this pack for a 2.5 mile hike into camp to test it out on the Superior Trail. 22 degrees, fresh snow at 51 lbs. I felt like I was carrying about 25-30.

      I try to make a weekend trip camping once a month in our beautiful state parks here in MN and this bag is my go to. Its so comfortable.

      Storage is accessible. Straps are durable. The Cinnabar colour is awesome.

      My wife tried the female version (Aura) and wants one asap.

      I'm Hooked!

      • Familiarity: I've put it through the wringer

      This is the first Osprey pack I have ever owned. Have done countless backpacking trips with this bag and have zero complaints. The AG system is absolutely incredible. Every time I put the pack on no matter how loaded up it is I feel like i'm putting a tight hugging Koala on my back. Osprey really does a great job at providing you with pockets and straps for everything you need and nothing you don't. I'm now a Osprey addict.

      Early Review, But Instantly in Love!

        This, like the title says, is a early review. I have only taken this pack out for a one night trip, covering 23 miles over the course of two days. But what I have done an extreme amount of is packing, unpacking and rearranging all of my gear in the pack So I guess you can say this review is more of a non physical review, but it still will help in questioning your purchase of this pack. Number one, I have a rather larger down bag I take because I have large shoulders, as well as the longer length in the bag because I am rather tall. Inside the stuff sack that Big Agnes sent with the bag, it fit absolutely perfectly in the bottom sleeping bag compartment (as well as gave the bottom of the pack a nice shape). Every single zipper is quality on the pack, of course you need to be careful when closing a tight pocket, but I have had no issues with being worried if the zipper can handle it. I stuffed by jetfoil mini mo, big agnes fly creek ul2 tent, patagonia down jacket, pants, shirts, socks, underwear, camera gear, 5 liters of water in plastic bottles, as well as some random bits of food for the night all in the main compartment and with how I packed and compressed everything down I still only used about half of the compartment. I then added some head lamps to the exterior pockets, toiletry items, camera tripod, . and a phone charger and the pack just consumed everything. The hip belt pockets are not as small as I originally thought they were going to be because of reading reviews, but I can fit my wallet, phone, as well as a GoPro all in ONE POCKET. The support system if gold on this pack, I threw 50 pounds of weight in the pack just for the heck of it, put the pack on and I can honestly say the pack did not feel a pound over 20. Of course, you need to set the straps up properly for your body shape, but once you dial the setup in, you will be skipping down the trail. Buy the pack, you will be stoked on stoked on stoked.

        Best pack out there !!!!

        • Familiarity: I've put it through the wringer

        For this review, I want to highlight the importance of a quality backpack. Obviously it depends on the weight you’re carrying, the length of the trip, and the weather, but let’s say you are at least doing a 3 night trip in the middle of summer and about 25 miles round trip. For this length of a trip it would be very important to be comfortable, ie. having a well-rounded backpack.

        My backpack of choice, hands down, would be the Osprey Atmos 65. It has a good medium to high volume capacity and most importantly, it is comfortable. The Atmos, as well as a few other Osprey packs, has a vented, mesh back panel which greatly reduces heat and sweat from your back. This is a huge benefit I’ve noticed especially on those hot days. You don’t have a sponge on your back absorbing all of the sweat. You will still sweat because you are working hard, but you will be much more comfortable. The hip belts on this pack are on the medium size, and wrap around my hips nicely with no pressure points. The top loading compartment is big and has a nice draw string. There are multiple external pockets to throw quick access essentials into. The bottom compartment is perfect for a sleeping bag as well as anything else you have that is on the softer side. The top lid has two pockets that are nice for the “don’t lose” essentials. It also is detachable if you need to use it for a small day hike in the middle of your trip. It contains a hydration sleeve as well, however I never choose to use those. I find they’re too hard to clean and just aren’t that beneficial to ever bring. The overall weight 4 lbs 6 oz of the pack itself is on the medium side. It definitely is not on the ultralight scale. It can take a decent beating. You don’t have to worry about setting it down in rocks and it ripping or falling apart. For its weight though, it brings the best specs and comfort-ability you can find.

        I’ve brought this pack up Mt. Rainier, Mt. Baker, Black Peak, and through many other good hikes and I’ve never had and second thoughts. It has all the necessary attachments for ice axes and trekking poles as well as all the compartments one would need. I’ve brought it on 4 night hikes and have had ample room for non-essential things like chairs and beers. I am one to say “go big or go home” so yes there are cheaper options out there, but this pack you would never need to upgrade on (except if you need more space obviously). Yes, there are lighter options out there too, but if you’re carrying over 16-18 lbs of gear, I would definitely choose comfort in your pack over the 1-2 lbs you would lose if you chose a lighter pack.

        This is the best pack ever!

        size purchased: Medium

        I'm 165, 5'10"

        Let me know if you have any questions!

        Best pack out there !!!!

        Anti-gravity? whaaaaaaat

        • Familiarity: I've put it through the wringer

        This pack is amazing! The anti-gravity suspension puts the weight of my pack all to my hips, right where it should be. And, I don't have nearly as much back sweat! The lady-friend appreciates that. I also love the side access zippers, so that I can quickly access my rain jacket if the clouds start rolling in.

        I've found this to be one tough pack. After about 50 miles, my atmos still looks brand new.

        I measure at a 19

        Anti-gravity? whaaaaaaat

        One of the best backpacks I've owned

        • Familiarity: I've put it through the wringer

        The Osprey Atmos 65 is comfortable from the time you try it on for the first time to putting it down after multiple days of backpacking. I've carried between 30-60lbs and it has held up under all conditions. I've used it in Yosemite, Zion, and the Tetons among many others.

        I would highly recommend this pack for any multiple night trips.

        I'm 5'9" 210lbs and use the Medium size pack. I am just at the max for the Medium so if you are slightly taller I'd get the Large.

        One of the best backpacks I've owned
        Unanswered Question

        What is the cu of the lid on the Atmos 65? I want to know what I'd have left if I leave the lid behind. Same on the Exos 58, 48, etc

        I'm looking at the Osprey Atmos 65 pack and I'm wondering if the detachable/floating top part can be used as a small day pack.

        Hi Suzanne, the answer is no on the top lid convertibility. If you are looking for that feature, then bump up to the Aether / Ariel AG series. The top lid actually becomes a day pack!

        The Atmos is a men's pack... if you are looking for yourself, you may want to consider the Aura, the women's version - better designed and fit for a woman.

        Enjoy -


        Osprey Rep

        Hi, what will be the size n weight of the shipment of this backpack? Because I need to ship it to India using borderlinx courier forwarding company. So to get a shipping estimate I need the exact dimensions of the shipment along with its weight. Please revert asap. Thanks

        Size M Atmos Ag65

        Unanswered Question

        Hello there
        I have question about its dimension. I am planning to send to overseas and trying to figure it out how much shipping will cost me. Could you please tell me boxed dimensions of osprey atmos size L?

        best regards

        Unanswered Question

        Hello Roger here,I bought this backpack recently in May,used it in June once and all the graphics came off the face along with the eagle,why was this a stick on print instead of embroidered, this was my upgrade from my north face pack that's still going strong after 9 years without an airport cover,if I was still using the sack I was using that pack would be brand new,got lazy I guess. Anyways for my faceless cannot advertise that it's an OSPREY atmos pack, that backpacker magazine raved about, what size osprey airport bag should I get,is it worth it or continue using the sack that a duffle bag came in that I have been using?

        Best regards,


        Are you sure the top lid works as a "fanny pack."

        Best Answer

        I am double checking with our Osprey Rep but, I am pretty sure there is a waist belt to be used as a fanny pack. If I hear differently I will update this answer and follow up via email.

        Feel free to hit me up at or 801-736-6398.

        Do you have any idea when you'll get backordered packs out to people?

        The picture of the graphite grey shows at 50L size. Can you confirm it is 65L?

        I tried to order this on back order with the free hydration pack. The order would not proceed and cited no inventory. Please fix your system. Why have customers take the time to set up a back order when the order will not complete?

        Will you be getting anymore of the graphite grey in a size medium?

        Hey Sean,

        Looks like we just got these back on the site and currently have them available to place a backorder for. Hopefully we should be seeing them back instock within about 2 weeks. Get in line soon as I suspect this awesome pack will go quick the moment they get back in stock. Let us know if you have any other questions.