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Osprey Aether Pro 75 - Men's 75 Litre Lightweight Hiking, Expedition, Mountaineering Backpack


Regular price $619.95

Tax included.

For the experienced backpacker, guide, mountaineer or adventurer, there's no better tool for the job than the Aether Pro 75, featuring our most advanced fabrics, features, comfort and durability demanded by outdoor professionals and enthusiasts everywhere. A heavy-duty, customisable suspension system in a lighter package allows you to remain agile under a heavy load. A certified bluesign® product.

Key Attributes

Combines our most capable load-bearing suspension with a versatile, simplified, strippable bag design that reduces pack weight to a minimum. Carry the lightest pack possible, without compromising on comfort, custom fit and heavy-weight capability.
Benefit from our most heavy-duty, fully customisable backpacking suspension system in a more lightweight, streamlined package.
Constructed with our technical NanoFly™ fabric, which is reinforced with a triple-grid UHMWPE ripstop for outstanding strength and durability for the those who are roughest on their gear.
Versatile bag design features strippable components, including the toplid, hipbelt pockets and side compression straps, so you can tune your pack depending on what your adventure requires.

  • Removable top lid with FlapJacket cover for lidless use
  • Full-length vertical side zipper access to main compartment
  • Dual removable side compression straps
  • Dual front compression straps with StraightJacket compression
  • Removable dual ice tool loops with upper cord attachments
  • Removable sleeping pad straps
  • Sternum strap with whistle
  • Dual removable hipbelt pockets
  • Internal reservoir sleeve

Carry Information

4.0 mm LightWire peripheral frame effectively transfers load to hipbelt

Injection-moulded, die-cut foam AirScape framesheet maintains comfortable back contact with ventilated airflow channels and maximum stability for carrying heavy loads
Silicone printed lumbar and open mesh backpanel combine for supportive, lightweight and comfortable contact surfaces
Webbing torso length adjusters easily dial in fit and hold securely

Custom Fit-on-the-Fly Shoulder Straps allow for a precise shoulder wrap and fit
Spacer mesh fabric provides a soft and comfortable contact surface

Extendable Custom Fit-on-the-Fly Hipbelt offers a precise fit for varying waist sizes
Incremental length and angle adjustments allow for a finetuned fit
Crossbody ErgoPull hipbelt pulls weight into lumbar when hipbelt is tightened


    Load Range

    15-27 kg

    Volumes and Weights

    US and International weight and volume specifications

    Size cu. in. liter lbs/oz kg. Dimensions
    S/M 4455 75 4.87 2.21 31.5h x 21.5w x 16d
    L/XL 4633 78 4.98 2.26 33.5h x 21.5 w x 16d

    Key Fabrics used:

    • MAIN: bluesign® approved NanoFly™: 79% 210D nylon (100% recycled) w/ 21% UHMWPE ripstop, DWR treatment made without PFAS
    • ACCENT: bluesign® approved, 100% recycled 210D nylon, DWR treatment made without PFAS
    • BOTTOM: bluesign® approved, 100% recycled 500D high-tenacity nylon, DWR treamtent made without PFAS

    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 70 Pro  Litre Backpack Small / Medium Large/Extra Large
    Back Length 16-21"/40.5-53cm 20-23"/51-58.5cm