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Osprey Atmos AG 50 (2018) Internal Frame Backpack



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Availability: In Stock!

Orders placed in the next 3:11 hours ship today!

Availability: In Stock!

Orders placed in the next 3:11 hours ship today!
Item # OSP1B209M
The revolutionary Anti-Gravity Suspension system in the Osprey Atmos AG 50 delivers an unparalleled balance of support and ventilation. Load-hauling capability and smart organization add to the pack's hard-earned trail cred.
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The revolutionary Anti-Gravity Suspension system in the Osprey Atmos AG 50 delivers an unparalleled balance of support and ventilation. Load-hauling capability and smart organization add to the pack's hard-earned trail cred.

An engineering work of art as much as a carrying system, Osprey's Anti-Gravity Suspension system equips the Atmos AG 50 with weight-carrying efficiency, breathability, and a contoured fit that'll nearly make you forget you have it on your back. A broad-mesh, tensioned backpanel stretches seamlessly from the shoulder straps all the way out across the hipbelt. Though the pack maintains constant, responsive contact with the wearer, warm air can escape freely because of the separation caused between the mesh and the pack itself. Innovative stiffeners in the load-lifters even enable the shoulder straps to stand away from your body without jeopardizing performance. Beneath the mesh, a lightweight aluminum frame provides support and distributes weight. A sliding sternum strap and an adjustable Fit-on-the-Fly hipbelt with extandable padded "fins" further enhance fit. Accommodating backpackers of different heights, the pack is available in your choice of sizes. The Small Atmos AG 50 fits torsos ranging from 16"-19", the Medium fits from 18"-21", and the Large accommodates torso lengths ranging from 20"-23". Built in adjustability in the harness makes it easy to reset the height of the shoulder straps to offer the best fit within those stated torso ranges.

Designed to comfortably carry 25-40 pounds of gear, the Atmos AG 50 lends versatility for outings ranging from overnight trips to fast-moving, light-packing extended backpacking trips. The Small size offers 2868 cubic inches of storage capacity, the Medium offers 3051 cubic inches, and the Large Atmos AG 65 has a 3234 cubic inch capacity. The main packbag has full top access and a divider between the main compartment and a separate front entry sleeping bag compartment allows for organization of wet and dry gear. When hauling longer items or in need of access between the two compartments, you can unbuckle the divider and convert the Atmos AG 50 to a single, large compartment.

A welded, stretch woven nylon pocket on the front of the pack allows you to stash extra layers or other gear. Dual zippered pockets located inside the floating lid of the Atmos AG 50 provide other organizational options. If you want to save weight and/or you are traveling light, you can remove the lid entirely and use the integrated, low-profile FlapJacket lid to keep the contents of the packbag fully protected. Side compression straps help you cinch down your load and also serve as lash points for additional gear. Stretch woven side pockets are the perfect place for stashing water bottles or other smaller items.

The pack has integrated trekking pole loops and an internal lined sleeve and dual exit ports combine to make the Atmos AG 50 hydration compatible (hydration system not included). Zippered mesh pockets on the hipbelt keep snacks and essential items within easy reach.

Constructed of lightweight, abrasion-resistant fabrics, the Osprey Atmos AG 50 is available in your choice of sizes and colors.

  • LightWire tensioned, full peripheral frame comfortably transfers pack load
  • Top to bottom suspended mesh wraps shoulders, back and hips for a fully integrated fit
  • Adjustable suspended harness with structural load lifter bar for load transfer and comfort
  • Die-cut foam lower and mesh ExoForm wrap upper on harness
  • Suspended mesh hip wrap for load transfer and comfort
  • Adjustable Fit-on-the-Fly hipbelt
  • Floating top pocket with web attachment points
  • Stow-on-the-Go trekking pole attachment
  • Dual stretch mesh side pockets
  • Dual zippered top lid pockets
  • Dual ice tool loops with bungee tie-offs
  • Large stretch mesh front pocket
  • Removable sleeping pad straps
  • Lower zippered sleeping bag compartment with removable divider
  • Dual upper and lower side compression straps
  • Sternum strap with safety whistle
  • Dual zippered hipbelt pockets
  • Integrated FlapJacket cover for lidless use
  • Internal hydration reservoir sleeve



Best Use Backpacking
Access Top Loading w/ Lower Sleeping Bag Compartment
Warranty Limited Lifetime
Volume Small: 2868 cu in
Medium: 3051 cu in
Large: 3234 cu in
Type Internal Frame Backpack
Sternum Strap Yes; Adjustable
Maximum Weight 40 lbs
Material Main: 100Dx 630D Nylon Dobby
Accent: 210 High Tenacity Nylon
420 HD Nylon Packcloth
Item Weight Small: 4 lbs 2 oz
Medium 4 lbs 3 oz
Large: 4 lbs 5 oz
Torso Adjustment Yes
Hydration Compatible Yes
Frame Material Aluminum
Fits Torso Small: 16"-19"
Medium: 18"-21"
Large: 20"-23"
Dimensions 33" x 15" x 15"
Detachable Daypack n/a


Real Customer Reviews

Average Rating:
(based on 8 real customer reviews)

8 Items

Comfortable Anti-Gravity Suspension system, easy compartment access
Reviewed by Mike B. - October 17, 2018

Likes: Great torso adjustability and comfortable Anti-Gravity Suspension system.
Dual Pockets in Floating (removable) Lid.
Separate access to sleeping bag compartment.

Dislikes: None So Far.

Great pack. Fit well the anti gravity system takes all the weight off the shoulders.
Reviewed by Michael M. - September 30, 2018

Likes: Anti gravity system. Pockets. Separate sleeping bags compartment.

Dislikes: None

Best pack
Reviewed by Levy - September 18, 2018

Likes: Loaded with a lot of features
Modern Design
Suspension System (Anti-Gravity) - The most comfortable pack I've ever owned.
Well Built Pack - Stitches and zippers look durable.

Dislikes: Side mesh pockets look fragile.

Excellent backpack
Reviewed by Ben S. - September 9, 2018

Likes: Love this backpack and all it’s features.

Dislikes: No dislikes at all!

Comfortable and practical
Reviewed by Darshan G. - September 4, 2018

Likes: Love this pack, adjusts easily, lots of internal space included a separate compartment for the sleeping bag and hiking poles.

Dislikes: None

I found this to be an excellent bag for a 4 day hike on the Ice Age Trail.
Reviewed by Mudfoot - June 11, 2018

Likes: The 50 liter bag had plenty of room for my necessary gear and a couple of small extras.

Dislikes: Getting the bag just right with the suspension system takes a bit of getting used to but once there was very comfortable.

perfect size, extremely comfortable
Reviewed by Charles J. - June 9, 2018

Likes: For a light but not quite ultralight backpacker this is the perfect bag. It's not too big and not too small. I can pack for a 4 day trip and bring everything I need but the size keeps me from bringing weight adding extras. The addition of the pack is great.

Dislikes: I prefer the grey and orange color scheme of the previous model.

Great pack
Reviewed by Stephen B. - May 1, 2018

Likes: Comfortable, durable, and just the right amount of storage.
Great pack. I currently have the Atmos 65L as well. I bought the 65L first. the 65L is a little to big for a 7 day trip so I started looking for a smaller pack. the Atmos 50L was perfect. I was able to fit everything for a 3 day trip with room to spare. I think if it is packed right that you can carry all you need for a 7 day trip and be fine.

Dislikes: hip pockets could be a little bigger

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