Men’s Hiking Backpack

The Atmos™ AG 50 is the best-fitting, most ventilated and comfortable pack ever made for traditional backpacking trips lasting a weekend or more. The innovative AntiGravity suspension makes it feel like you're carrying less weight and seamlessly wraps around your body, which means you'll enjoy every mile more than ever. From easy to use stretch mesh side pockets, Stow-on-the-Go trekking pole attachment, and FlapJacket for lidless use, the Atmos™ AG 50 is still the top contender.

Key Attributes

Anti-Gravity Suspension - Our Anti-Gravity suspension features a continuous backpanel of lightweight mesh extending from the top of the backpanel to the hipbelt to provide unmatched comfort and ventilation. The seamless structure automatically contours to the body, providing outstanding fit and unrestricted movement.

Flapjacket -A removable floating lid can be replaced with a fixed FlapJacket to protect your gear and minimize weight.

Organization -An adjustable stretch mesh front panel pocket provides additional external storage and organizational options.


  • Anti-Gravity suspension - feels like you are carrying less weight than is in your pack
  • Removable floating top lid with dual zippered pockets and web attachment points
  • Integrated FlapJacket protects gear when top lid is removed
  • Stow-on-the-Go trekking pole attachment allows you to stow your poles in steep terrain or whenever you need your hands free
  • Adjustable harness and Fit-on-the-Fly hipbelt to dial in perfect fit
  • Internal hydration reservoir sleeve accommodates up to a 3L reservoir
  • Front stretch mesh pocket stores rain gear for easy access when skies darken, or wet gear after the downpour stops
  • Dual access stretch mesh side pockets for storing water bottles and other gear with InsideOut side compression straps
  • Dual upper and lower side compression straps stabilize loads and maintain a streamlined profile
  • Zippered hipbelt pockets keep snacks and smaller items close at hand
  • Lower zippered sleeping bag compartment with removable divider
  • Dual ice tool loops
  • Removable sleeping pad straps
  • Sternum strap with integrated safety whistle

*Rain Cover NOT Included - 2021 Model

Carry Information

Anti-Gravity Suspension - LightWire-tensioned, full peripheral frame comfortably transfers pack load

Anti-Gravity Backpanel - Top to bottom suspended mesh wraps shoulders, back and hips for a fully integrated fit

Anti-Gravity Mesh Harness - Adjustable suspended harness with structural load-lifter bar for load transfer and comfort. Die-cut foam lower and mesh ExoForm wrap upper

Anti-Gravity / Fit-On-The-Fly Hipbelt


Load Range 12 - 18 kg






2868 IN3 / 47 L

78H X 38W X 39D CM

1.87 KG


3051 IN3 / 50 L

83H X 38W X 39D CM

1.91 KG


3234 IN3 / 53 L

88H X 38W X 39D CM

1.95 KG




Brand Osprey

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