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Osprey Aether AG Men's 85 Litre Hiking / Mountaineering Backpack with Raincover


Sale price $429.95 Regular price $449.95

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The Osprey Aether Anti-Gravity Men's 85 Litre Backpack offers the perfect backpacking solution when your primary concerns are carrying heavy loads in ventilated comfort on week-long, month-long, or never ending journeys. Now featuring Osprey's innovative Anti-Gravity technology and custom fit along with an incredibly robust feature set.

Carry basecamp worthy loads with skis to boot, or journey beyond the reach of resupplies. For backpacking, thru-hikes and alpine expeditions, the Aether AG Series has a pedigree like no other pack. Osprey has set the bar for technical backpacking packs by combining Anti-Gravity™ technology with customizable fit and innovative features to create a more capable and comfortable pack for long-haul load carrying on any multi-day excursion.When you need a pack that can carry heavy loads for up to a week or for a month, there is no better option than the Aether AG 85 pack.

PLEASE NOTE: TOP-LID DAYPACK NOT AVAILABLE OUTSIDE OF THE U.S.A. - Pack listed below comes with a built-in raincover instead of the daypack top lid. An Osprey Daylite Daypack can be attached to the outside of the pack.

Key Atrributes

Custom Fit
The IsoForm5 harness and CM™ hipbelt provide outstanding fit and comfort for especially heavy loads and long miles. Both components are interchangeable to provide a truly custom fit.

Anti-Gravity Technology
The Aether/Ariel AG™ features a continuous, suspended panel of lightweight mesh extending from the upper torso through the lumbar area of the pack and wraps the user in supreme comfort.


  • Built in Raincover
  • Dual upper side compression straps
  • Dual access side stretch mesh pockets
  • Lower Inside-Out™ compression straps
  • Zippered hipbelt pockets
  • Stow-on-the-Go™ trekking pole attachment
  • Additional main compartment access
  • Large stretch mesh front panel pocket
  • Dual front compression straps with StraightJacket™ compression
  • Dual ice tool loops with bungee tie-offs
  • Zippered sleeping bag compartment with removable divider
  • Removable sleeping pad straps
  • Integrated FlapJacket™ cover for lidless use
  • Internal hydration reservoir sleeve
  • Large front J-zip access to main compartment

Carry Information

Anti-Gravity Suspension

  • LightWire™ tensioned, full peripheral frame comfortably transfers pack load
  • Top to bottom suspended mesh wraps shoulders, back and hips for a fully integrated backpanel fit

Isoform Anti-Gravity Mesh Harness

  • Interchangeable sizes for a precise, personalized fit
  • Adjustable suspended harness with structural load lifter bar for load transfer and comfort
  • Die-cut foam lower and mesh ExoForm™ wrap upper
  • Adjustable sternum strap with safety whistle

Isoform5 CM Hipbelt

  • Custom heat molding and interchangeable sizes for a precise, personalized fit
  • Mesh bridge between pads pulls in the lumbar to support heavy loads


Load Range

15-27 kg

Volumes and Weights

US and International weight and volume specifications

Size cu. in. liter lbs/oz kg.
S 5004 82 5.293 2.41
M 5187 85 5.346 2.44
L 5370 88 5.4 2.46


Dimensions are shown as length (height) x width x depth

Size Height Width Depth
Aether AG 85 Litres 87cm 43cm 39cm

Key Fabrics used:
  • Main: 210 Denier Nylon Dobby
  • Accent: 210 Denier High Tenacity Nylon Shadow Box
  • Bottom: 500 Denier Nylon Packcloth

Sizing and Fitting of your Osprey Pack

Fit is the key to pack performance. Take the time to get it right. Most Osprey packs are available in multiple sizes to fit a range of torso lengths. To find your torso length, have a friend measure your back along the spine (as shown in the picture below) from the level of your iliac crest (the top of your hipbones) to your C7 (the knobby bone at the base of your neck).  Use the table below to determine your pack size.
 Aether 85 Litre Backpack Small Medium Large
Back Length 16-19"/40-48cm 18-21"/46-53cm 20-23"/51-58cm