Osprey Aether 70 Pack

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This lightweight mountaineering pack features a custom-moldable hipbelt and a streamlined design for backcountry pursuits.

  • Features

    • Top-loading pack shaves weight with its lightweight yet tough 210-denier high-tenacity double-ripstop nylon construction
    • The new AirScape Suspension uses peripheral rods, a nubbed foam back panel and an internal framesheet
    • Running down the sidewall, the peripheral rods anchor to load lifters and hipbelt, actively transferring load and resisting sag
    • Providing superior load support is the removable IsoForm CM (Custom Moldable) hipbelt, a 3D dual-density foam contoured and anatomically shaped
    • Osprey's certified Custom Molding available in all REI stores—check your local store for a custom hipbelt molding oven
    • ErgoPull hipbelt closure provides extra leverage in cinching, drawing tension along top and bottom--not through the center--relieving hipbone pressure
    • IsoForm dual-density foam harness with Spacer Mesh promotes airflow and wicks away moisture during warm weather and intense activity
    • Externally accessible bottom compartment accommodates all types of sleeping bags
    • Top pocket can be removed and converted into a lumbar pack; IsoForm hipbelt on pack can be removed and slid onto lumbar pack for comfortable carrying
    • Dual-entry side mesh pockets keep essentials easily accessible, and a built-in front mesh pocket accepts Osprey Excessories for added capacity
    • Front compression wings let you securely compress the contents of the pack, whether full or nearly empty, without sag or load distortion
    • Ski straps, ice axe tool loops, sleeping pad straps and extendable lid accommodate a variety of alpine gear
    • Hydration-compatible design features reservoir sleeve and dual drink tube exit port for on-the-go hydration (reservoir sold separately)
    • HDPE framesheet and single aluminum stay protect back from bulky or pointy items and support heavy loads


    Specifications based on size Medium. Specifications for Small and Large torso / waist and hips / base volume / weight are as follows:
    • Small - <18.5 in. / 27-31 in. / 4,000 cu. in. (67 liters) / 4 lbs. 9 oz.
    • Large - >20 in. / 33-37 in. / 4,400 cu. in. (73 liters) / 4 lbs. 12 oz.
    View the Osprey Aether Product Line View all Osprey Backpacking Packs
  • Technical Specs

    Frame Type

    Internal Frame


    4 lbs. 10 oz.

    Adjustable Torso Length


    Fits Waist/Hips

    30 - 34 inches

    Number of Stays


    Number of Exterior Pockets

    2 + main compartment

    Best Use


    Fits Torso Length (in.)

    18 - 20.5 inches


    Nylon double-ripstop

    Frame Material


    Sleeping Bag Compartment




  • Reviews
    82 reviews with an average rating of 4.5 out of 5 stars

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