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

Osprey Packs Atmos AG 65 Backpack - 3783-4150in


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    4.5 5 25

    25 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?

    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.

      Osprey Packs Atmos/Aura AG Product Tour

      A product feature tour of Osprey Pack's fourth generation Atmos/Aura Series, a ventilated backpack series that features the Anti-Gravity™Suspension*. This 3D suspension system provides seamless comfort that contours the body allowing a trail experience like no other. Combined with custom capability and a full feature set, the Atmos AG™ sets a new standard in ventilated backpacking.

      Great bag

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

      I have to agree that this is a great bag. However, I have also found the hip belt pockets are hard to close when wearing the pack. I think it may be due to the curve of the hip belt itself.

      Perfect gift!

      • Familiarity:I gave it as a gift but have feedback to share

      I gave this as a gift to my brother he hasn't been able to take this bad boy out on an overnighter yet due to weather, but he's packed it up with all his gear and tested it out . He's 5'8, medium build, and got a size medium, which fits nicely . He told me his favorite feature is the anti-gravity technology, which allows your back to breathe by minimizing contact between your back and the bag. There's also a lot of storage pockets for all your gear. Overall, he's happy with the gift.


      • Familiarity:I've put it through the wringer

      I bought this bag for my husband for work and recreation. He's a trailworker and needed something that is durable and comfortable. He says it has the best fit of any pack he's ever used in this line of work. It has plenty of room for gear and tools, handling even a full load well. His only issue with it is that the zipper pulls on the hip belt pocket can be difficult to close.

      Great pack

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

      This is my first Osprey pack and it didn't disappoint. I recently took it for a quick overnight trip on my families property. It was only 4 miles in but due to weather conditions I had her packed heavy with winter gear weighing in near 55 lbs. The bags mesh back design integrated into the waist strap hugs your body extremely well and made the extra weight a none issue. The pack is my new favorite as far as comfort, my only complaint is I would like to have some more external gear space. My old pack had side cargo bags that were extremely useful. All and all you can not go wrong with this pack!

      Hey Steven, so glad you like this Atmos! The hard part with side bags is that they can clutter up the pack. We do try to give you mesh side pockets and a mesh shove it pocket to store those things you want on the outside, or just can't fit inside. Sounds like you had quite a load!

      Thanks for writing,
      Osprey Rep

      Best pack ever

      • Familiarity:I've put it through the wringer

      You have to buy one to know how and why this backpack belongs to a whole new generation

      Osprey 65ag

      • Familiarity:I've used it several times

      The bag over all is good. But there are some issues. 1. The bag is a pain in the ass to put on your back. Because the suspension front is folded, you have to first open it with your hand and then maneuver the bag on your back. 2. Waist pocket zippers are sometimes difficult to pull when your wearing the bag. This is because the pockets are to far back. 3. The sleeper bag compartment sometimes causes the zipper not move because if it is not packed fully, you need 2 hands to pull the zipper open. 4. The divider between the sleeping compartment and the main compartment is not zippered. It is strapped down. Maybe I will make one main compartment. 5. When wearing the bag, I felt a little pain on my left side above the waist. There is something hard on the waist belt causing the pain so now I don't pull the waist belt tight. Once all of these issues are dealt with then the bag is good.

      Hi Thomas, The bag does require you to pust it on differently than other bags, and it is the product of the way the pack hugs you. It just requires you opening up the bag. The pack divider it not zippered so you CAN make one compartment easily. The other issues I havent heard yet, so I will be sure to send them on to Osprey.


      Osprey Rep

      This Backpack Is Fantastic

        Im beginner hiker from Poland, bought this backpack in US at Altough it was my first climbing trip , I wanted to quite large backpack. This backpack can survive a lot, starting from holding inside of him full size tent, big tripod, lot of cloths, food, documents. A big pocket slots in each corner of this pack can easily fit a lot of smaller things like med kit, knife, everything that can help you survive in a wild. My 5 days story in Yellowstone National Park with this backpack on my backs was amazing and comfortable even if i did almost 60 miles of hiking. Thank you Osprey, good job!

        This Backpack Is Fantastic

        Best backpack out there...

        • Familiarity:I've used it several times

        When my wife and I decided to hike the Pacific Crest Trail, we knew we needed some quality packs that were going to be comfortable and durable for 4-5 months of straight hiking. I boiled my options down to Gregory or Osprey, and after trying the Gregory Baltoro and the Osprey Atmos, I knew the Atmos was by far the most comfortable. My wife and I got the men's and women's (Aura) versions, and have loved every trail with them.

        My favorite part about this pack is the Anti-Gravity Suspension system. Osprey designed a continuous mesh backpanel from the top of the pack to the hipbelt. It conforms to your back like a sleep number bed! Just kidding, but it really is the most comfortable fit you can find. The hipbelt and shoulder straps are awesome - I've never had them slip or had to readjust them after miles of hiking.

        We purchased our packs from REI so they each came with a raincover and small 3L drybag. Backpacking up here in Alaska, the raincovers have been essential. We haven't had our gear get wet with the raincover on while hiking, but when we left our packs on the ground in the vestibules of our tent (with the covers on and upright), the outside of the packs got a little damp overnight. One of my biggest nightmares is my TP supply getting soaked in the wilderness, so the small drybag is perfect for my daily "study supplies." Well done REI.

        The Pockets: I'm a guy, pockets are big deal to me. I love Osprey's open-loop zipper-pull design, they make life easier when your fingers are numb and you need to access your sleeping bag quickly in cold temperatures. There are two pockets on the removable lid that I've used for clothing and food and have always hiked with the lid on. For this reason I don't like the redundancy of their "FlapJacket" underneath the lid for when the lid is off. The main compartment of the pack is large and easy to compress with outside straps. Hydration bladder stores inside the main compartment. On the outside of the pack are two vertical zippered pockets for keeping maps, snacks, or anything lightweight for easy access. I really like the outer open mesh pocket for stowing your jacket when you get too warm on the trail. The bottom pocket holds a sleeping bag separate from the rest of your gear in the main compartment. There is a water bottle pouch on each side - with two openings each -and they are easily reached while you have the backpack on. There is a pocket on each side of the hipbelt . . . only complaint here is the zippered openings aren't big enough for a man to reach all his fingers in easily - my wife has smaller hands and doesn't have this problem.

        Best backpack out there...

        Hey Christopher, thank you for writing such a great review! So psyched for you and your wife that you were able to spend the time and miles together on the PCT - awesome. And that you both loved your Osprey Packs, even better.

        It's the best when your gear can enhance your trip, and not take away from it. Kudos to Osprey for this great design!

        Thanks again for the review -

        Osprey Rep

        Not Osprey's Best Bag

        • Familiarity:I've put it through the wringer

        Don't get me wrong, I really like my Atmos, but I just feel like it's on the weaker end of Osprey's line of gear. I've now had my bag for about 5 years, and I'm used to it. I just wish that I would have purchased the Aether. It would be nice to have a detachable top fanny pack and to have the custom fit waist belt.

        Hey JT, thank for writing. Just to clarify, if you bought your Atmos 5 years ago, you had one of the first generation Atmos Packs. The New Atmos AG is a whole other animal - truly a phenomenal carry.
        Now, I also have to agree with you that for me, I prefer the custom fit of the Aether / Ariel series. The Ariel is my pack that is my go to, specifically because of customization.

        Thank you for taking the time to write!

        Osprey Rep

        Very good pack,hipbelt velcro slips.

        • Familiarity:I've put it through the wringer

        Atmos AG 65 . I'm in between sizes (18" back)--I used a medium for 285 miles and a small for 350 miles on the PCT.
        *it carries a load of 35 lb really, really well--the load is predictable with every move you make.
        *It has side pockets that permit easy access to water bottles while wearing the pack.
        *Back ventilation was great!
        *Organization was easy with two large front pockets, a large front pouch for wet items, two side mesh pockets, hip belt pockets, a lid with two pockets and a divider in the main bag.
        *Zipper placement on the lid pockets permitted access for snacks, etc. without removing the pack.
        *It had provision for carrying two ice axes as well as the Osprey style trekking pole carrier on the shoulder strap.
        *Loops on the shoulder strap allowed me to attach a diy beacon pocket.
        *Hip belt pockets CAN hold more than 60% of a large smartphone (iPhone 6/Samsung Note4) with moderate confidence, but they won't zip shut over the phone to save your life.

        *I felt slight backward pull due to the ventilation space behind the back mesh, that the lifter straps didn't relieve. The Exos 58 with 30 lb. fit closer with almost imperceptible backward pull.
        *Not really light weight at over four pounds, though lighter than many.
        *Can't be worn without a shirt because of the mesh on the shoulder straps.
        *A hard element in the hip belt pressed on my hip muscles just below the top of my pelvis enough for me to return the pack.
        *The hip belt pockets had short zippers and were too shallow to carry much. And the hip belt pockets will not zip shut over a phone and snacks, sunglasses, etc. The hip belt pockets on my ULA Circuit WILL zip over a big phone.
        *The main reason for return: The "on-the-fly" hip belt adjustment slipped when it got wet from water dripping off wet brush. Then it slipped dry. After a while, I couldn't trust the rip/stick to hold the adjustment. Both sizes S and M had far too many miles of strap on the hipbelt.
        *The pack squeaked after two weeks on the trail.

        I didn't use the hydration pouch.

        I've rated this pack 4 stars, because of the good things Osprey has done with this pack. When they reshape the hard element sewn into the hip belt and correct the hip belt adjustment, it'll merit 5 stars.

        My current gear list includes:
        zpacks 20 degree bag, wide, regular length.
        hammock with netting, whoopie slings, tree straps,
        Hammock Gear 20 degree under quilt, .
        Warbonnet Superfly tarp,
        8 carbon stakes, rutalocura
        cat can alcohol stove with snuff can, alcohol in pint water bottle, foil windscreen, lighter,
        Evernew 0.9 L saucepan, diy pot cozy.
        Fleece zip neck shirt, North Face Thermoball jacket, OR rain jacket, rain skirt, gaiters (or rain chaps), mitten shell/fleece liner, synthetic insulated hood.
        Platypus 2 L bottle, Powerade 1L bottle,
        Aqua mira, chapstick, sunscreen, bug juice.
        Personal locator beacon.

        Hi Jeffrey,

        I was considering buying this bag, and like you, I too have an 18" back. What would you say would be better to use since you have used both sizes (M and Sm).

        There's no store around my location that has this bag to try on so I'm trying to get a feel for it online.

        Thanks for any feedback! :)

        Velcro hip belt

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

        The suspension was great while it worked. The hip belt got wet during a rain storm and after that the hip belt could not be tightened without the Velcro loosening. I could not keep it on my iliac crest,so my shoulders had to take the weight...ouch. I can still pull the Velcro apart with my hands on one side of the hip belt. Also, the reflective stuff on the mesh pocket comes off when wet,so don't store your wet items there to dry when the sun comes back out.

        I just left the Mountain Shop in Portland, OR where the associate said they took their 65 AG's off the shelf for the Velcro slip issue. I had the same problem recently on the PCT in the northern Cascades walking through wet brush. The problem also didn't go completely away after it dried up, as a quick pull on the hip strap would as often as not, loosen the Velcro. As I mentioned in my own review, the hip belt has a piece of hard plastic sewn in that would dig into the soft tissue of my hip, which I hope was unique to me, as I really liked how the pack carried 30-35 lb. so well.

        Great pack for hot temperatures

        • Familiarity:I've used it several times

        For many years I've been a fan of Arcteryx packs, especially the Bora line, but won't deny that there suspension isn't the coolest (temp wise) of the bunch. Been mainly using my bora 80 and 95 for long trips but recently have been going on shorter trips with my girlfriend (3-5 days). The bora 80 would have sufficed but some areas we were considering were in the 80+ temp ranges so I decided to look for a new pack that would offer great air circulation.

        Obviously the Arcteryx Altra 65 was an option but in the end I opted for the Osprey. It was a tough decision because I had always disliked the Ospreys because of what I perceived as weak lumbar support (IE Xenith vs Bora) and lack of adjust ability ie hip belt camber and load stabilizers. So you can tell i was a bit hesitant on the ATMOS initially but after taking it on a trip to Kibbie Lake, Yosemite NP on a scorching day through Rim Fire affected areas, I must say DAMN! This packs suspension definitely keeps you cool! Everytime a breeze came through, it felt like there was AC going on my back! Also the weight transfer was excellent, if not better than any other pack I've tried! (Bora still wins for 40+ loads). My only complaint though is with possible durability issues with some of the features like mesh pockets and very light weight buckles but only time will tell!

        The pack is definitely a winner for overnight to week long trips. Will probably still be using my bora 80/95s for winter trips.

        One thing to mention is that BackCountry's customer support as been phenomenal! Now I have owned the pack past the return/exchange period but they still let me exchange the pack for a bigger size. I did feel incredibly bad as I had thought I got the right size (was in between small and medium at 18 in torso) but the load lifters just didn't work as well... Really appreciate Backcountry going out of their way and allowing me to exchange the pack. Will definitely continue coming back to Backcountry for my outdoor needs!


        Favorite Osprey pack

        • Familiarity:I've put it through the wringer

        This is my favorite osprey pack I have bought, and I have bought many. Great size, while super lightweight. The great suspension got me through a week of backpacking in Norway with a heavy load. Great organizational pockets, I fit everything I needed without feeling like it was overfilled or off balance. I wish it had come with a rain cover incorporated but have now gotten one so all is well!

        New Atmos, Same Love

        • Familiarity:I've used it several times

        I had an older Atmos model a few years ago and recently upgraded. Took it out for a long weekend in Michigan and absolutely loved it! More pockets, zippers, and straps than I knew what do do with, but it never seemed cumbersome.

        The "Anti-Gravity" suspension system is a godsend--I was able to carry everything including 2 gallons of water without feeling any excessive burden. I was able to walk, climb, and even run without any jostling or struggle. The ventilation is the best I've ever seen and even kept my hydration pack cool.

        It's obvious that someone spent a lot of time designing this bag well. Numerous pockets are easily accessible while hiking--pockets on the hips, the lid, sides, all over the place. The pack itself is roomy and can fit a ton. I had everything packed before I even realized the storage space at the bottom for my sleeping bag.

        Osprey clearly knows what they're doing and how to make a bag worth recommending.

        I'm 6ft 1in, athletic build. All my sizing measurements are on the very low end of a large, so should I go for the large pack or the medium pack?

        Hey Sebastian - I am the same height as you 6'1" and got this pack in the Large. The sizing is really based on your torso length and my torso is 21" which is at the bottom end of the range for Large. Feel free to contact me directly with any additional questions about Osprey Pack sizing.

        - Kyle L. - Expert Gearhead

        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."

        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.