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Top Pocket

The removable, dual compartment top lid converts to a quality lumbar pack for side trips. The built-in belt stores behind the padded, ventilated lumbar pad when not in use

Front J-Zip

Strong J-zipper on front panel provides quick access to gear in main compartment

Side Compression Straps

Dual side compression straps keep internal loads stable and provide for carrying longer items item like tent poles

Dual Access Stretch Mesh Side Pockets

Dual access stretch mesh side pockets provide additional, easily accessible storage options

Zippered Hipbelt Pockets

Dual zippered hipbelt pockets provide secure storage for often needed items

Stretch Mesh Front Pocket

Large front stretch mesh pocket for quickly stashing extra gear

Accessory Attachment

Attach an accessory pack such as the Daylite or Alpine Pocket using the built-in cord loops

StraightJacket™ Compression Straps

Two horizontal StraightJacket™ style compression straps provide load stabilization and compression

Tool Attachment

Dual tool loops with single position bungee tie-offs provide secure tool carry

Sleeping Bag Compartment

Wide mouth access sleeping bag compartment with divider stows your bag out the way

Sleeping Pad Straps

Adjustable and removable sleeping pad straps provide secure extra carry

External Hydration Sleeve

External hydration sleeve in backpanel simplifies refilling and protects pack contents from spills

Stow-on-the-Go™ Trekking Pole Attachment

Osprey’s unique Stow-on-the-Go™ system allows users to tuck away trekking poles quickly without have to remove their packs


The Osprey Aether 85 is made for alpinists and backpackers who want to travel light and fast over rough terrain with full loads of climbing and camping gear.

The heat-moldable IsoForm CM™ hipbelt and harness blend cushioning and firmness to create a customized, comfortable fit, while the LightWire™ frame transfers weight from your spine to your hips. Dual side compression straps secure your load while the Airscape™ mesh backpanel keeps you dry even when you’re pushing hard to gain the summit.

The main compartment is accessible via a large top opening or a front J-zip so you can find gear quickly. A separate sleeping bag compartment keeps your bag compressed and out of the way. The top lid converts to a lumbar pack for quick trips from basecamp. And if you need additional volume, Osprey’s Daylite daypack (sold separately) attaches to the exterior via reinforced loops.

Stretch mesh side pockets and zippered hipbelt pockets give you plenty of easy-access storage options and the backpanel hydration sleeve makes liquid refills a breeze. The Stow-on-the-Go™ trekking pole attachment, ice axe loops, and removable sleeping pad straps provide plenty of secure external gear storage options.

Key Attributes

Load Capacity

With careful consideration to the balance between capacity and weight, these packs provides excellent load stability and convenient gear organization.

Custom Molding

The moldable hipbelt and harness offer outstanding comfort for carrying heavy loads over long distances. Both components are interchangeable to provide a truly customized fit.

Carry Information

Lightwire™ Suspension

  • 3.5mm lightWire™ peripheral frame effectively transfers load to hip belt
  • Single 6061-t6 center stay maintains back panel shape
Airscape™ Backpanel

  • Mesh covered ridged foam allows maximum ventilation while keeping the load close to the body

Isoform Harness

  • Spacer mesh fabric provides a comfortable fit

Isoform CM™ Hipbelt

  • Custom heat molding for a precise, personalized fit


Load Range
35 - 60 lbs.
16 - 27 kg
  Volume Dimensions Weight
SM 5004 in3 / 82 l 35h x 14w x 16d in. 4.98 lbs.
MD 5187 in3 / 85 l 37h x 14w x 16d in. 5.03 lbs.
LG 5370 in3 / 88 l 38h x 14w x 16d in. 5.07 lbs.
XL 5553 in3 / 91 l 39h x 14w x 16d in. 5.18 lbs.
SM 5004 in3 / 82 l 90h x 40w x 35d cm 2.26 kg
MD 5187 in3 / 85 l 94h x 40w x 35d cm 2.28 kg
LG 5370 in3 / 88 l 96h x 40w x 35d cm 2.3 kg
XL 5553 in3 / 91 l 98h x 40w x 35d cm 2.35 kg
210D Nylon Dobby
210D Nylon Shadow Box
500D Nylon Packcloth
Product Manual Additional languages available here »



by PowerReviews
OspreyAETHER 85

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

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(4 of 4 customers found this review helpful)


Excellent pack - almost perfect


from Cape Town, South Africa

About Me Avid Adventurer


  • Comfortable
  • Easy To Load
  • Good Padding
  • Lightweight


    Best Uses

    • Extended Hikes
    • Heavy Loads

    Comments about Osprey AETHER 85:

    + Very comfortable, even though I had the honours of carrying the tent and all rubbish so I was on 27kg if you include the 3 litres of water I would typically carry.
    + Very large rain cover – big enough to go over anything extra on the outside of the pack too. The cover is stored in the lid.
    + Great build quality. We had to lower the bags twice and all scrapes and bashings have not shown up. The buckle never popped on the waist band either.
    + The lid has a HUGE storage area (under the rain cover) and I was very impressed. Also, with two clips and rethreading one piece of tape one can remove it entirely. There is then a strap which converts it into a "moon bag" of sorts. I removed mine each night and kept it as a "grab bag" in case we had to run away in the night as we had security issues.
    + Mesh external pocket on the outside of the bag is handy for storing jackets and whatever else.
    + The j-zip is handy for gaining access into the bag too.
    + A pocket per side on the hip belt is big enough for a cell phone, pepper spray, compass, that sort of stuff. Decent size.
    + Light weight.

    – The side pockets are a joke. You can barely squeeze anything into them. They should have allowed more material there. And I'm not sure why they have that dual hole system. I'd rather have had a deep single pocket either side. Would work for small water bottles, very small ones… I used them to shove in gaiters when not in use. Possibly the only feature I'm not impressed with.
    – There is an external hydration pocket between your back and the bag. Looks impressive and neat and clever. However once loaded I think you could maybe fit a litre in there. I could be wrong. I certainly had zero chance of getting the three litre in. One could say put in the bladder then load the bag, however filling up then becomes a pain. I will get a one litre and try it in the future, so perhaps it's an awesome feature and it's just me.
    Rate it 5 stars though!

    • What Is Your Gear Style:
    • Minimalist
    • Was this a gift?:
    • No

    (3 of 4 customers found this review helpful)


    Very comfortable bag


    from crest wood kentucky

    About Me Avid Adventurer


    • Comfortable
    • Easy To Load
    • Good Padding
    • Good Suspension
    • Highly Adjustable
    • Large Capacity
    • Lightweight


      Best Uses

      • Extended Hikes
      • Heavy Loads
      • Wet Weather

      Comments about Osprey AETHER 85:

      Great for backpacking

      • What Is Your Gear Style:
      • Minimalist
      • Was this a gift?:
      • No

      Displaying reviews 1-2

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