The Osprey Atmos AG 65 (ASIN B08BGQR6T5) is available on Amazon.ca for $449 CAD — a 65-litre backpacking pack built around Osprey's Anti-Gravity tensioned mesh suspended backpanel, which keeps the pack body completely off your back for maximum airflow, plus a Fit-on-the-Fly hip belt adjustable while loaded and an Osprey All Mighty lifetime warranty.
11 mentions · 6 threadslast mention Jun 2026
Real comments from Reddit, linked to the original thread. Nothing paraphrased.
Try it on first. If you have narrow hips and no butt, it may not be the pack for you. I wanted so badly to love my Atmos, because the shoulders were soooooo comfortable. But the mesh on the hips caused chafing, even through leggings, and on one occasion, unbuckled. And I mean severe, bleeding-level chafing. I tried everything to make it work.
If you snag this, you got such a great deal! Osprey is a fantastic company with the almighty warranty. You will never need to buy another 65L pack
Amazing backpack if you don't mind a bit of extra weight. Carries very comfortable and makes it hard to switch to anything else. Unless you are really into UL, I think this backpack is one of the best currently out there. I personally never regretted carrying an extra kilo or two for added comfort.
The aether is designed to carry heavy loads. The atmos is designed to carry medium weight loads, while being more comfortable.
I've had that same backpack for years. I don't remember what I paid for it at REI but it was over $200 and I highly recommend it.
yep. I had a large amd switched out the hip belt for a smaller one. Fits awesome now. REI did it for free because I bought it online during the early days of the pandemic couldn't really go in to get properly fitted.
I've got the 50. Get the 65. It isn't much bigger or weigh too much more empty but if you need it will be there. Unless you're backpacking international and want it to fit in an overhead I'd say get the bigger one.
The Atmos AG is a COMPLETE redesign and looks and fits nothing like the old Atmos. I feel it is an upgrade for the better, as it has even better ventilation, including lower back and hip ventilation, which no other pack has, is more comfortable, has more features.
I have this bag and use these straps for whatever I can't fit in the bag! Sometimes I like to put my carabineers on them to make it easier but I've used it to dry clothes that we have washed on the trail, stinky socks, my aluminum mug, my crocs, a compass, a kula cloth, you name it. Very handy. Great bag.
And their warranty is top. I had a buckle break on my atmos (probably threw it down too hard) and they sent me 3 replacements no questions asked other than serial number.
Paid $250 on sale in 2019, and it has been great. I did get a hot spot on my shoulder blade during a 3 day hike, I think it was from the way I had it adjusted. It went away after some tweaking.
The Osprey Atmos AG 65 is the best ventilated backpacking pack for hikers who prioritize back comfort and cooling in warm conditions. The Anti-Gravity suspended backpanel is genuinely effective at reducing back temperature on climbs, and the Fit-on-the-Fly hip belt makes mid-hike adjustments practical in a way fixed belts don't. The lifetime All Mighty Guarantee eliminates long-term cost concerns. For three-season backpacking where back ventilation matters, it's the benchmark.
