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Osprey Eja 58 Litre Womens Ultralight Backpack


Regular price $289.95

Introducing the new Osprey Eja 58, a women's-specific thru-hiking machine that's sure to become a staple on thru-hikes everywhere. Nothing matches their carrying comfort, and as the days and kilometres pass, you'll always look forward to shouldering the load. AirSpeed 3-D tensioned mesh backpanel keeps sweat down, strippable features satisfy the ounce-counters, and convenient features like Stow-on-the-Go™ trekking pole carry make ultralight backpacking ultraconvenient. Osprey's All Mighty Guarantee means you can rest assured we've got you covered if anything happens on the trail. Stripped weight - 2.21lbs, 1.00kg.


  1. Women's specific hipbelt and shoulder straps
  2. Removable floating lid with top-and under-lid zippered pockets for storing smaller items
  3. Integrated FlapJacket™ protects packed gear when top lid is removed
  4. Stow-on-the-Go™ trekking pole attachment allows you to stow your poles in steep terrain or whenever you need your hands free
  5. Dual access stretch mesh side pockets for storing water bottles and other gear with InsideOut™ side compression straps
  6. Front stretch mesh pocket stores rain gear for easy access when skies darken, or wet gear after the downpour stops
  7. Top lid web loop attachment points for external gear storage
  8. Ice axe attachment with bungee tie-off
  9. Removable sleeping pad and side compression straps
  10. Accessory cord attachment points for external gear storage
  11. Sternum strap with integrated safety whistle
  12. Internal hydration reservoir sleeve

Key Attributes

Ultralight design and materials plus the ability to strip weight by removing sleeping pad straps, compression straps and the top lid.

Airspeed Suspension
Tensioned backpanel keeps the weight in the pack off of your back, enabling highly ventilated carrying comfort.

trip the removable floating lid and replace with the fixedFlapJacket™ to protect your gear from the elements and minimize weight.

Carry Information

Ultralight Airspeed Suspension

  • 4mm( Lightwire) alloy frame
  • 3D-tensioned breathable mesh backpanel with side ventilation

Exoform Harness

  • Seamless layered mesh provides improved comfort and cushioning
  • 15 mm adjustable slide sternum strap
  • Stretch mesh energy-gel pocket

Exoform Hipbelt

  • ErgoPull™ closure
  • Seamless layered mesh provides improved comfort and cushioning


Load Range™
The green to yellow zones represent the recommended load range for this pack.

10-18 kgs

Volumes and Weights

US and International weight and volume specifications

Size cu. in. liter lbs/oz kg.


52 2.5 1.14
S 3356 55 2.53 1.15
M 3539 58 2.56 1.16


Size Height Width Depth
Extra Small (cm) 70cm 41cm 38cm
Extra Small (inches) 27.56 IN 16.14IN 14.96IN
Small (cm) 75cm 41cm 38cm
Small (inches) 29.53IN 16.14IN 14.96IN
Medium (cm) 80cm 41cm 38cm
Medium (inches 31.5 IN 16.14IN 14.96IN
Key Fabrics used:
  • Main:100D High Tenacity Nylon
  • Accent:100D High Tenacity Nylon Triple Check Dobby
  • Bottom: 210D High Tenacity Nylon

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.
Eja 58 Litre Backpack Extra Small Small Medium
Back Length 15-17"/38-43cm 16-19"/40.5-48cm 18-21"/46-53cm