Love everything about my pack. Great product, great company, excellent warranty. What a wonderful upgrade to what I had been using.Decided to upgrade my pack for year 2 on the Appalachian Trail and this pack was amazing! Felt like it was half the weight of my previous pack. Very durable, there is a reason Osprey is considered top of the line. Didnt realize it when I bought it but the lifetime warranty is very comforting to know too. Would absolutely purchase again!I’m a 63 year old who loves the outdoors and wanted the best, multi-day/weekend, highly functional and durable backpack within reasonable cost. I’m not doing thru-hikes so a heavier but durable pack was my goal. 2021 brought the new Aether 65 vs the older Atmos 65, both of which were my leading candidates. I settled on the older Atmos 65 because of the very positive YouTube reviews and the fantastic price just recently posted on Amazon in February, 2021....$239.00 brand new! My Atmos came today and to my surprise, it DID come with an included rainfly! Note that rain fly’s do not normally come with the Atmoses? The medium is a 65 liter pack weighing in at 4.56 lbs, so it’s no ultralight. But here’s why I settled on the Atmos 65:1. Anti-Gravity suspension/harness system - makes it feel like you’re carrying less weight than you actually are.2. Durable & Flawless construction - heavy duty quality zippers, durable outer material, and overall build (like a tank!)3. Great pockets & just the right amount of storage - 2 external storage pockets on the front of the pack is a winner! Also, trekking pole and dual ice axe lashings.4. Dual side pockets are large/deep enough to fit a full-sized, Grayl water filter flask.5. Removable brain and integral weather flap.6. Included rain fly & dedicated rain fly pocket. - You can also use this pocket for other item storage while stashing the rain fly somewhere else if you wish.7. The high vis, neon green interior provides great contrast when looking for items in low-light conditions.8. Osprey’s Almighty guarantee, lifetime warranty - 2nd to none!Conclusion: Although an older design, it is a proven pack with hundreds of satisfied users. It is a highly durable pack which will no doubt, stand the test of time. This is the best multi-day backpack, ever, imho!Great comfortable, light pack. The anti-gravity suspension system works and breathes well. Occasional squeaking but nothing particularly noteworthy. Abundant space to overpack, so I need to check myself with a scale. Love the fact the top is detachable, but do consider if opting to leave it at home that the pack’s folded-up rain cover lives there.This pack travels as well as you pack it. The first trip I took felt awful because I had the weight distributed all wrong-- heavy stuff (tent) hanging off the bottom, stuff strapped to the outside, and 1.5L nalgenes stuffed into the side pockets. After shedding an unnecessary 15 lbs and redistributing the load, my joy factor doubled.WARNING: I have a 33/34" waist. The belt is actually TOO BIG for me on the Large sized pack. I'm going to need to gain some weight, lolz, or find a way to buffer my hips. Two days into a backpacking trip, and the Atmos AG 65 was slipping down my backside. Really think things through carefully if you're on the M / L sizing boundary.Caveat: Last backpack I purchased was an early 1980's Jansport external frame model... when I was a pre-teen.It’s as good as they say it is.Most comfortable pack with a several pockets to stay organized! The Anti Gravity system does make a balanced load seem lighter with less back sweat!Just received it. I read many reviews on backpacks and this one fit my needs. I am packing it for a long weekend trip and it will handle everything I need to pack. I love how it fits. I hope I feel the same after the trip! After the long weekender, I am planning a week-long trip.Light, lots of storage pockets, adjustable fitDifficult to believe that a backpack can be comfortable but this one is, much more so than other packs due to the way the hip belt literally grabs you and takes the weight directly to the legs. Only a few days walks so far but the difference is amazing. Hopefully it will see me along the Pennine Way.Now back from the Pennine Way and I can really recommend this backpack. I had to spend a little time getting the perfect fit for my back, it is a matter of adjusting and readjusting, but when I found it, I could tell immediately. The included raincover worked very well. Nothing got wet inside, although I did use a liner bag just in case. The way the bag is held allowed air to pass along the back and as long as I was not wearing waterproofs I did not have a sweaty back.It is a big bag and managed to take all the kit including a tent inside the bag. When the tent was wet I used the ties as the bottom of the bag. I carried 28lbs, in comfort the whole way.Actually, the bag was maybe too large and I could have used a smaller one but I cannot fault it any way.I recently used this pack for my Tour du Mont Blanc trekking trip. 10 days of trekking through the Alps with about 16 kilogrammes of camping and essential gear on board. I could not be more pleased with this pack. I saw a lot of them during the course of the trip which confirmed to me that it was a great choice. It was very comfortable.I have not found anything I have not liked about this packI am a big man at 19 Stone, and this fits like a glove, When walking in warm conditions you can feel a breeze on your back with no sweat, unlike all the other Packs I have bought.Generally I carry around 30 pounds (13.61 kilogram) off camping gear unless its real cold, and this Pack seems lighter somehow.This backpack will be with me some time.I have been in the scouts for years, was in the army reserves and often go on hikes and camping trips and I have to say that this is the most comfortable, most well made and sturdy bag.It hardly feels like it's on your back and is perfect for anyone who wants to get into camping/backpacking. Would definitely recommend!Did a wild camp with my family. All the gear needed fitted in, including an extra sleeping bag for a grandchild. The “anti gravity” bit, which I think means the support around the hips, helped me enormously. It has encouraged me to take up back packing again, after a long, long break of many years...