Internal hydration sleeve accommodates up to a 3L reservoir
Removable top lid has two zippered pockets and webbing attachment points
Stretchable mesh front pocket
Sleeping bag compartment with removable divider and zip closure
Stow-on-the-Go trekking pole attachment keeps your poles on your harness for ease of use
Two stretchable mesh water bottle side pockets with InsideOut compression straps
Hipbelt pockets with zip closure
Removable sleeping pad straps
Dual ice tool attachment loops
DESIGN & DETAILS:
The AntiGravity suspension makes it feel like you are carrying less weight than is in the pack
AntiGravity suspension features a mesh panel across the whole back for ventilation and comfort
Adjustable shoulder harness features a structural load-lifter bar to help transfer weight and provide comfort
Harness has a die-cut foam lower and mesh ExoForm wrapped upper
Fit-on-the-fly hipbelt and adjustable harness allow you to conform the bag to fit your body
The LightWire frame adjusts the weight to your lumbar region for an easier carry and better hike
Built in FlapJacket cover protects gear when you decide to go lidless to minimize weight
Sternum strap is adjustable and features a rescue whistle
Two upper and two lower side compression straps for a streamlined profile
Materials: Top- 100D X 630D Nylon Dobby
Materials: Accent- 210D High Tenacity Nylon
Materials: Bottom- 420HD Nylon Packcloth
Brand : Osprey
Country of Origin : Imported
Web ID: 21TRYMMTMSG50XXXXCTP
End Use
Camping, Hiking
Bag Style
Backpack
Frame Type
Internal
Gear Capacity (L)
S/M: 50 L | L/XL: 53 L
Gear Capacity (cu. in.)
S/M: 3051 cu. in. | L/XL: 3234 cu. in.
Weight
S/M: 4 lbs 5 oz | M/L: 4 lbs 8 oz
Fits Torso Length (in.)
S/M: 17-20.5" | L/XL: 19.5-23"
Fits Waist/Hips
S/M: 28-50" | L/XL: 30-50"
Material(s)
100% recycled nylon
Frame Material
LightWire aluminum
Pack Access
Top, side, bottom
Number of Exterior Pockets
7
Hipbelt
Yes
Raincover Included
Yes
Reservoir Compatible
Yes
Dimensions
S/M: 31.89" x 14.96" x 12.2" | L/XL: 33.86" x 14.96" x 12.2"
Gender
Men's
Sustainability
Contains recycled materials, bluesign® approved
Features
Sleeping Bag Compartment, Sternum Straps or Hip Belt, Trek Pole Attachment, Hydration Reservoir Compatible, Compression Straps, Back Panel Ventilation, Water Bottle Pockets
REVIEWS
4.5
100%
Recommended
14 Reviews
Bryce A.
Received incentive
3 days ago
If You Are Looking For
If you are looking for a pack that makes a heavy load feel like a daypack, the Osprey Atmos AG 50 is it. I’ve put this pack through its paces, and it truly earns its reputation. The Anti-Gravity (AG) suspension system is nothing short of magic. It conforms to your back so perfectly that the weight feels evenly distributed and essentially "floats," preventing the usual sore shoulders or lower back strain even when fully loaded. It handles weight effortlessly, making long treks feel significantly shorter. What really sets this pack apart for me, however, is the accessibility. The side-entry access is a massive quality-of-life upgrade—it allows you to reach into the main compartment without having to dump your entire pack to find that one piece of gear at the bottom. Combined with the deep, dual-access stretch mesh side pockets that keep water bottles and snacks secure yet reachable, the organization is flawless. Whether you're heading out for a quick weekend or a longer excursion, the Atmos AG 50 offers the perfect blend of comfort, stability, and intelligent design. Highly recommended.
Matt W.
Received incentive
5 months ago
Just Used This On My
Just used this on my first week long camp trip and it’s awesome!!
Darren Q.
5 months ago
Great! …. Apart From
The waist pocket zips do not close found them so frustrating - impossible to operate - the pockets need moving closer to the centre of the waist or the zips need charging.
Craigybee
5 months ago
Overall Good
On firt trip with it, the rubberised meshing has started to come away. Comfort is good, however, the plastic clips to adjust the height of the straps digs into my shoulder blades, which was sore after a while. They could be better off lower down on the backpack, will look at moving them myself for next trip. Lots of space for everything I need for a 3 to 5 day trip. The on the fly walking pole storage just gets in the way, I ended up storing poles in the ice axe storage part.
David D.
Received incentive
9 months ago
I Most Like The Ease
I most like the ease of adjusting the pack vs the the old model.
Grant V.
Received incentive
1 year ago
Only About 20 Miles On
Only about 20 miles on this new pack but thrilled so far! This was a replacement for my 20-year-old pack. I was embarrassed to send in my old pack for repair and, surprisingly, Osprey sent me a replacement. So grateful for their policy and standing behind my original purchase so long ago. Really enjoying some of the improvements of the feature set of the new Atmos. One negative point - I am struggling to zip the pouches on the hip belt while wearing the pack. Should work easily one-handed but it does not work well. Encountered another backpacker with the same model that said he was having the same problem. His pack and mine were both brand new. Hoping it improves with use and break-in. Really pumped on the pack overall. Super comfortable even when overloaded (wanted to be < 30 lbs but carried 38 lbs when full on Day 1).
Graeme M.
1 year ago
Atmos Ag50
Great back pack comfortable and easy to adjust to fit perfectly. My only complaint with osprey bags is would prefer a simple loop for a carabiner in each top pocket. I really don’t like the cheap pastiche key clip. Minor point but a simple loop to attach a small dry bag or carabiner would stop things falling out.
Felipe J.
1 year ago
Do Not Buy This Pack Unless You Try It On First. It's Way Too Big
This back is way too big. The waist straps are too big and don't tighten enough. I am 5.8 and weigh 150 pounds. I went on a trip and came back bleeding from my hip bones.
Auscar S.
Received incentive
1 year ago
The Atmos Ag 50/65 Is
The atmos ag 50/65 is THE BEST backpacking pack out there hands down. I personally use the 50 L and it is the perfect size for 1-3 night trips. It is extremely comfortable with around 30lbs of gear. I love the sleeping bag pocket on the bottom of the pack, absolute necessity and only a feature on the atmos AG NOT the atmos LT. The removable lid is also a welcome feature when you’re trying to go lightweight.
Jonathan
Received incentive
1 year ago
One Of The Best
This is one of the most critical pieces of gear from my 2023 Appalachian Trail thru-hike. Before I had picked any of my other gear, I knew my pack would be an Osprey. It didn't take much research to settle on the Atmos 50. This thing is a beast and could handle anything I threw at it or in it during my hike. The best feature is the one everybody already knows well: the airspace and ergonomic curvature that perfectly forms to your back. Furthermore, this distributes weight very efficiently, allowing your hips to bear more of the burden and relieve your shoulders. Other features I love include the waist pouches where I stored quick access items like my multi-tool and hand sanitizer, the included rain fly for quick rain protection, and the angular water bottle holders on each side where I had quick and convenient access to my one liter Smartwater bottles. I even made regular use of the two pockets in the brain portion. The interior dimensions are sufficient to fit a bear vault of the largest size turned sideways. There are straps on the bottom end of the pack that frequently held my tent, though you could also extend the top straps for the brain and store your tent under there too. The shoulder straps are thick and comfortable. I was able to attach a phone pouch on one and regularly attached my umbrella to the other. The materials are rugged. Despite all the use and abuse, scraping on trees and rocks, repetitive motion abrasion, weather exposure, and slinging around, the pack held up well without failure for 2,000 miles. There are probably adjustments I could have made to reduce weight, as this comes in at 4.2 lb. This while most thru-hiking packs in the ultralight category are less than half of that. With Osprey you're getting two extra pounds of comfort, in a sense. Alternatively, they do have the Exos 58 that weighs less. Also, regarding sizing, I think osprey could improve by separating them out into four: S, M, L, and XL. Other lesser known UL brands do this, so I would think osprey could handle it. This is my only real "complaint". All around, Osprey is, in my book, the best backpack maker in existence.
Tomk
Verified Purchase
3 years ago
Everything I Need And Want
The only problem I've encountered was getting the hip belt right. I'm a skinny guy with bony hips so it took a bit to get the hip belt right. But the pack is super customizable so I eventually figured out the setup. I got this bag to downsize/upgrade from my old 70L(?) pack. Its been perfect for 4 days of backpacking or quick car camping as well. I was initially worried about having less pockets than my old pack, but that turned out to be a non issue. Great bag!
Troot
Verified Purchase
3 years ago
Excellent Overall
Great size for a variety of adventures. Super well built, as you’d expect from Osprey. Very comfortable, and the air flow is outstanding. You might consider the 65L if you’re an overpacker, but I think the 50L is great to help keep weight down.
Mike
Verified Purchase
3 years ago
Great Features, Great Color!
I bought this backpack as a gift for my husband, who is a multi-day hiker. I am not a hiker myself, so I was a little nervous about the purchase, but Osprey made it easy take the chance. And he loves it! Its very well ventilated, light weight, and has great access for things you need to reach for regularly. The hip straps are molded in a "hugging" position, so it makes the load feel more securely positioned over his hips and takes pressure off his lower back. And I love the color, he looks great in this shade of green. We are very happy with the purchase!
Solo
3 years ago
New Pack
Just picked it up, packs well and comfortable. Just curious why there are loops for ice axe but no attachment points for them?
