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  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Absinthe Green
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  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Absinthe Green
  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Cinnabar Red
  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Graphite Grey

Osprey Packs Atmos AG 65 Backpack - 3783-4150in


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    40 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.

    • Anti-Gravity suspension system
    • Adjustable torso length
    • 30-50lb load range
    • Top access with zippered front panel access point
    • Removable/floating top lid
    • Removable sleeping pad straps
    • 100D x 630D nylon dobby main fabric
    • Internal reservoir sleeve
    • Front panel pockets
    • Trekking pole and ice tool gear loops
    • Internal compression strap
    • Item #OSP002J

    Tech Specs

    [main] 100D x 630D nylon dobby, [accent] 210D high-tenacity nylon, [bottom] 420HD nylon packcloth
    [small] 3783 cu in, [medium] 3967 cu in, [large] 4150 cu 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?

    Great Backpacking Pack

      I purchased this pack after realizing the one I was using had too small of a frame for my torso. I am 6'2" and I got the Large frame. This pack is amazing! I no longer get fatigue from pain, just from actual hiking (as it should be!). I have hiked nearly 100 miles since I acquired the pack this year so I have become very familiar with it.

      All the compartments are great, including the hip belt pockets. I recently went on a 5 day hike and had no problem fitting and organizing all my gear. I love the top compartment and side ones for their capacity and easy access - a must when you need to have certain gear and snacks easily accessible.

      This is the most customizable pack for fit that I have ever seen, you can really dial it in for a perfect fit. I should mention, at first I had an issue with the hip belt slipping. The hip belt has a pad that extends and is attached via velcro pad inside the strap. The actual hip belt strap attaches to the extendable pad, so all the pulling force is actually applied to the velcro. One side kept slipping on me (which was very frustrating). I finally realized there was a piece of extra fabric covering most of the velcro pad, so it didn't have the needed holding power. After removing the extra fabric off the velcro I have had zero issues with it slipping.

      People have mentioned they want a hip belt strap to convert the brain pack into a day pack... I have used the full pack as a day/summit pack and greatly prefer it over a small uncomfortable lumbar pack. The compression straps suck everything down nicely and the lighter the load, the closer it feels to real "Anti-Gravity". Plus I like keeping my hydration reservoir with me at all times, cant do that with a lumbar pack!

      Overall, the pack is super light, comfortable, functional, and versatile. I highly recommend it.

      Comfy Carry!

      • Familiarity: I've put it through the wringer

      This pack is so comfortable! I just got back from 3 days in the Wind River Range and this pack helped make the trip super enjoyable!

      The Anti-Gravity suspension system is my favorite feature and made carrying 50 pounds of gear barely noticeable. I had the heaviest pack in my group and was the only person that didn't have hip or back pain at the end of the trip (also the only Osprey pack in the group).

      The pack easily carried sleeping gear, clothes, a large bear vault with food for 2, and all the other odds and ends needed for 3 days in the backcountry. My only complaints were the lack of a rain cover and the flimsy divider that seperates the sleeping bag compartment from the rest of the pack, but these were in no way deal breakers. This pack is definitely my go-to choice for long trips in the future!

      If you have any questions about this pack, or any other pack on the site, please contact me directly.

      Comfy Carry!

      Osprey Atmos 65

        :Traveled around Central America for over a month with this bag! Not one day did I have an issue with this amazing product! The upper lid has two convenient zippers that allow you to store, and separate things perfectly.A total of 9 different pickets on the whole bag that help organize!! The design of this bag, makes accessing everyday things and clothes easy, keeping items that aren't getting everyday use stored in the top loading main compartment, out of the way! Bag is fully padded, and the 3D suspension contouring allows for actual ventilation and upper body mobility which in the heat or rain becomes a necessity... Couldn't speaker any higher of this product, would have been lost with out it. Thanks for the suggestions and help from backcountry's awesome Gear head Henry Osborne that helped me pick, and get some great use out of this Osprey bag!!


        • Familiarity: I've used it several times

        Not a lot to nit-pick here except I'd love to have an incorporated rain cover and a more versatile lid(it does detach for a day pack but you're much better off getting the Osprey Daylite to couple up with the Atmos). If your two biggest priorities when backpacking are compartments and a stable ride, this is your bag. I'm kind of a skinny frame and needed to really pull in the hip belt and shoulder straps but they adjusted nicely and put most of the weight on my lower body, which is ideal. I guess one more gripe is that my Ridgerest foam sleeping pad BARELY fit in the outside compression straps but, as I understand it, not a lot of folks are using the foam roll-ups anymore. But all of these things - rain cover, day pack, compression straps - take a backseat to comfort when you're logging long days on the trail with a lot of up and down. 9/10, do recommend.


        Nice pack

        • Familiarity: I've used it once or twice and have initial impressions

        Tried out the Atmos AG 65 size large down into the Black canyon. Pack is great but the waist belt does not fit tight enough around my belly. I am 6' tall and had to go with the large to fit my torso. With the waist belt all the way tight, I still couldn't make it snug. Size 31" waist
        Perhaps more beer...

        yea, i'm 5'10'' and weigh 165ish, but i couldnt get the hip belt tight around my hips. i never thought i had an abnormally small waist, especially for people who hike a lot, but i may return the pack because the belt just doesn't get small enough

        Great Backpack

        • Familiarity: I've used it once or twice and have initial impressions

        I am not a very experienced backpacker. I purchased this for a five day trip in Yosemite--my longest back country trip to date. I started with roughly 35 pounds, a little more with water. On the second day, we hiked 14 miles. I had no issues at all. Very comfortable, held up great. As others mentioned, it does not come with a rain cover. The drizzle did not soak through, but I did buy an Osprey rain cover for my next trip. Things were a bit tight when the obligatory Yosemite bear box was added in, but I was carrying all of my supplies (including tent) and some of my better half's supplies to lighten her load. I also tried the Osprey Xenith 75, but I found it to be much larger than I needed, so I stuck with the Atmos AG 65. The only complaint I have is not unique to this backpack, but applies generally to most popular backpacks: I wish the removable brain came with a strap to wear it as a small day pack rather than a fanny pack. I much prefer the small day pack over my shoulder(s) to a fanny pack constantly slipping down my waist. I ultimately did not use the brain for this purpose, but opted for a small packable drawstring backpack that I brought along for that specific purpose.

        5 days of supplies comfortably.

        • Familiarity: I've put it through the wringer

        Carried over 40 pounds of supplies for 4 days (packed for 5) without any major issues. I like my hipbelt higher that the way most people wear their's and it was very easy to adjust the torso length during the hike. With the amount of weight that I was wearing the AG system didn't float quite as much but the hard backing is still contoured to the back and its not really a problem at all. There is a separate sleeping bag compartment and two useful back zippered compartments big enough to fit a 32 oz water bottle, medical supplies, extra fuel etc.
        No pack is perfect but here are the things I don't like.
        1. why not make the divider between sleeping bag compartment and main zippered rather than straps and a flap.
        2. no rain cover.
        3. add a hipbelt to the removable top compartment to make it a daypack/fannypack.
        4, I know where to put my sleeping bag. I know where to put my sleeping pad. I couldn't find a good place for the tent, ended up splitting it between 3 of us. It also could use a dedicated tent pole slot instead of using the water bottle holder on that side.

        With all that said I tried on a lot of packs at stores and looked at a lot online and this is still the best I could find and the most comfortable by far. I'm really happy with it.

        Had some mouse damage because I hung the pack instead of just a bag for food. Will update review when I see how good the almighty guarantee is.

        Video review of an awesome pack!

        • Familiarity: I've put it through the wringer

        All things considered, I like this pack. I'm in Alaska using it as a backpacking guide. I did a video review of this on youtube, if it doesn't answer any questions you have just comment there and I will find the answer for you. I would recommend this pack.

        Lightweight, comfortable bag

        • Familiarity: I've used it once or twice and have initial impressions

        The Osprey Atmos 65 is a very comfortable and well ventilated pack at a very reasonable cost and weight.

        For moderate weights (less than ~40lbs) the Atmos 65 AG is a comfortable pack and its AG (Anti-Gravity) system spread the pack load wonderfully across the hips, back, and shoulders. For warm weather hikers the Atmos also brings a near unprecedented amount of ventilation and is worth taking a look at if you log a lot of time in these types of climates. The Atmos has a great variety of of features, such as pockets and organizational ability, without much weight penalty.

        The Atmos' only drawback: if you carry a lot of heavier loads (50+ pounds) either because your preference is for mostly extended trips or you just chronically pack heavy, we'd recommend a different pack. But for most people on 2-7 night trips, or longer for folks who pack lighter, the Osprey Atmos 65 should be a top consideration.

        New Go-To

        • Familiarity: I've used it several times

        Let me preface this by saying that I'm a serious pack-nerd. I've got a closet full of packs for everything – hiking, backpacking, climbing, skiing, etc. Out of all of my packs, the Atmos is my new favorite. The suspension system rocks, and there is such good air-flow through the back panel that it barely feels like you're wearing a pack. Plenty of well-thought out pockets and an easily removable top lid. I haven't babied it too much, and the Atmos is still looking like new – very durable fabric. As others have said, the hip belt pockets can be hard to close when the belt is cinched down, but that's far from a deal breaker. I like the Atmos so much that I might join all of my friends and start using the Osprey as my climbing gear pack on long approaches.

        You know you want it, and here is why!

          This is by far my favorite bag I own, mainly due to all the great features and suspension. Starting off this bag comes with a large brain, giving you more than enough room to store any items you may want to get to quickly (i.e. first aid kit, sunscreen, shades, etc..). Another great small feature is the hip straps, contain a awesome little pocket for another quick access point. This pocket I mainly use for chap stick, knife, or other small items that I want to access quickly. As well this pack has a large main compartment that you can fit everything you may need on a multi day trip (food, sleeping bag, tent/hammock, etc.). To help keep everything organized I absolutely recommend some nice stuff sacks or dry bags to keep everything organized in this large compartment.

          Outside the great pockets that make your life easier, this pack has the best suspension system that I have used. The anti-gravity system helps carry disperse the weight evenly and as well helps your back breath. When walking long distances you will realize how important it is to have a great suspension, making every step easier and more comfortable.

          Overall I recommend this bag to anyone that is looking for reliable, comfortable, and the best warranty possible. If you don’t know Osprey has the all-mighty warranty policy that will ensure that your bag is good to go for years and years to come.

          Inserted is a pic from Osprey of the Anti Gravity Suspension that should help visualize how advanced this system is.

          You know you want it, and here is why!

          Osprey 65 not the best

          • Familiarity: I've put it through the wringer

          I took this pack on the AT for 34 days and the entire hike had problems with the straps slipping. I wasted so much energy holding the strap ends to prevent slipping I often screamed obscenities aloud. When I sent the pack back to OSPREY, I told them to test it fully loaded, they returned it saying there was nothing wrong with the pack. Obviously they didn't test it.

          Fantastic Pack

            I got this pack as a gift for my dad and he keeps raving about how this is unlike any pack he has owned. He did have a very old pack before this so he did upgrade to different technology but he is so surprised on how light the pack is when he has it on his back. He has only used in for two over night trips but he is very satisfied so far. He says he would give this five stars and he would recommend this pack to anyone.

            Lighter than zero-gravity

            • Familiarity: I've used it once or twice and have initial impressions

            I finally got to take my pack out for a real test run this weekend on an overnight in Escalante. It was still fairly cold at night so had to pack a tent and a good amount of layers, plus wanted to weigh it down a little to see how much I could handle. It worked beautifully. The pack really is extremely comfortable, just need to make sure you set it right from the beginning to where it should sit on your body. I love that the hip straps hug your body, I think it makes for even better support. Like many other packs this one is obviously roomy, has lots of cool pockets and zips, etc. but my absolute favorite part is the anti-gravity suspension system. Not only does it make it feel like you're barely carrying any weight, but it let's your back breathe and cool off (great for someone who sweats like crazy on the trail). Can't wait to take this pack out for more adventures!

            Not quite anti-gravity, but pretty great

            • Familiarity: I've used it once or twice and have initial impressions

            I inaugurated this pack with 6 nights in Grand Canyon, so it got its ups and downs, so to speak. I really like this pack. I think the mesh and the orientation of the shoulder straps ( though I don't know if the straps are unique to this pack or no), made for a great pack. And in general, I just like the pack. It seems pretty rugged with solid zippers. I like its pockets -- I like a place to put a blister kit, or trail food, or maps, or a windbreaker I peeled. They have designed a nice mix of small, medium, and fairly large pockets. The only issue I had was that the platypus water cable sometimes got crimped as I jammed all my gear in.

            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

            Is this pack suitable for overnighters or shorter trips??

            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."

            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?

            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.