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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


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    54 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?

    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

      a lovely pack indeed

      • Familiarity: I've used it several times

      I bought this pack as a gift to my friend and backpacking partner, and this is what he had to say:

      This backpack is like God's gift to man. The feel of it upon my back is nothing short of pure ecstasy. The antigravity mesh and suspension system is a work of pure ingenuity and genius, and the utility it offers is incredible. If I were forced to pick between this pack and the gift of everlasting life, I would pick this pack. 10/10


      • Familiarity: I've used it several times

      Fits amazingly on my body. I have had back issues for a while now so I was nervous to be buying a pack at all... but I picked this up after loading a friends with 35+ pounds and hiking all day. I could barely tell I had a pack on at all! It has many features that allow you to perfectly dial your setup. It could easily hold 55+ pounds worth of stuff or even a week or so long trip. Not to forget that it is one of the more visually pleasing Osprey packs. Above all would be Osprey's ALL MIGHTY GUARANTEE, which includes a lifetime warranty!!! I'm 5'7 and got a medium but you should get fitted because everyone has a different torso size.

      Impressively comfortable

      • Familiarity: I've put it through the wringer

      I used this on a few hundred miles of the PCT this summer, it was sturdy, reliable, and best of all comfortable: the waist straps are supportive, and there's plenty of adjustment options for the shoulders and sternum, to fine-tune it to your specific shape.

      Everything fit fine, and it was no hassle to reorganize as I pulled my gear out in camp.

      With the pockets closed I never had problems with critters, although they ate the bite valve of my Platypus system.

      I give this pack an Ospray-ving review!

      • Familiarity: I've used it several times

      I have been using a 59 liter Alps Shasta pack for the last couple years. It was a great starter pack but I was looking to upgrade to something a little bit larger and with a few more pockets. In doing my research it came down to the Gregory Baltoro 65 and the Osprey Atmos 65.

      I'm not one for the long backpacking trips; 2-4 day trips are my sweet spot. That being said, aside from the annual 4th of July trip where too much beer is packed, my pack is typically under 40 lbs. In my research, I found the Baltoro to be a very robust pack, a bit heavier, but better for 40+ lbs. I decided the Osprey was the appropriate pack for me, and I was definitely not wrong.

      The inaugural trip for my new Atmos 65 was a four day 40 mile trip through the Sierras, with a quick stop atop Mt. Whitney. The pack is incredibly comfortable, especially for the longer 10-15 mile days (although 10-15 mile days are inherently quite uncomfortable).

      A quick note to those less experienced packers - if you leave your pack at a trail or around camp unattended, make sure to leave all the pockets open, or hang the pack out of reach of wildlife. A mischievous well-fed Marmot chewed a hole in one of the belt pockets of my brand new pack to get at some crumbs. Not a great start to the use of my brand new pack, but in the end it's supposed to be a rugged piece of equipment so I suppose I can't complain too much.

      The pack does a great job distributing the weight. I also like the size of the waist belt. With my former pack, I could tighten the waist as tight as it would go and it was still a bit loose, leaving too much weight on my shoulders. I am also a big fan of all the pockets available and their location; it makes accessing and organizing things very easy, and satisfies my OCD organization habits.

      The one complaint I have is regarding the top lid. My previous Alps pack had a lid that could be removed from the pack and converted into a small should or fanny pack. This is a great feature for those backpacking trips where I pack in and stay in the same location for a couple days; I take day hikes and can carry water/snacks for the couple hours we are out without the added weight of a separate pack. After realizing that the Atmos 65 does not include this feature, I inquired with Osprey. Apparently enough people complained about additional weight of the straps required for this conversion, so Osprey removed them. However, there are many ways to easily engineer a strap system and convert it to a pack yourself, so it'™s not too big of an issue.

      Overall the Osprey Atmos 65 is a great pack, and I highly recommend it for both beginner and experienced backpackers, looking for a 2-4 day trip pack!

      Ransom - excellent review, thank you! We have heard alot about the lid request. The reason we did not include it at the moment is because it would bump the price up higher, and the weight too, and would differentiate it LESS from other products above it... all things to consider when we put a pack together! We are aware of this and may update it for the future.

      Thanks again,
      Osprey Rep

      I never knew I could be comfortable.

      • Familiarity: I've used it several times

      I've been backpacking for years with great packs and never knew I could be as comfortable as I was the first time I used this pack. The first outing was a week long trip and I was ready for the usual soreness over the first few days but it never came. It was also a great upgrade from my older pack with only 3 areas. All the additional pockets really helped organize without adding weight and bulk.

      The best pack on the market

      • Familiarity: I've put it through the wringer

      This pack is by far the most comfortable pack out there. The technology in this pack is above the competition. If you are looking for a super solid pack that is going to be very comfortable then I would look no further.

      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.


          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."

          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.