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Item # OSP1G208M

Osprey Eja Pro 55 Women's Internal Frame Backpack

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We love the Eja for thru-hiking, but the Osprey Eja Pro 55 Women's backpack is next level, shaving almost an entire pound of pack weight! Despite weighing less than 3 pounds, it's still packed with features and comfortably carries up to 30 pounds.


  • Ultra-lightweight design keeps weight to a minimum without sacrificing performance: The pack's Ultralight AirSpeed suspension system consists of a 3.5mm powder-coated LightWire frame, a tensioned mesh backpanel, and foam-padded shoulder straps. High-tenacity NanoFly ripstop fabric has an amazing strength-to-weight ratio.
  • Built-in torso adjustability: An easy-to-access injection-molded "ladder" allows you to adjust the torso length of the pack for a customizable fit. The pack also comes in two sizes to accommodate different torsos. The Xsmall/Small best fits 13"-17" torso lengths and the Medium/Large best fits from 16"-20".
  • Modular design provides volume flexibility: Built-in compression and a removable lid allow you to adjust storage capacity and pack weight to suit the specific needs of any given adventure. Removing the lid reduces storage capacity by 9 liters and shaves another 2.6 ounces and an integrated minimalist FlapJacket cover still protects interior contents.
  • Sustainable construction that doesn't compromise on functionality or durability: Tested to ensure that they meet Osprey's demanding technical requirements, the fabrics used on the pack are bluesign-approved and the protective durable water-repellent treatment is PFAS-free.

Check out all of these other special features!
  • Removable, floating single compartment top lid with key clip
  • Four webbing lash points on the top lid
  • Internal hydration sleeve with center back hose port and Osprey Hydraclip for easier reservoir hanging (hydration system sold separately)
  • Internal compression strap keeps loads stable
  • Large front fabric compression pocket with stretch side panels accommodates overloads
  • Multiple front panel lash points for securing extra gear
  • Lower side compression straps designed to capture sleeping pad on front panel
  • Deep, dual access stretch mesh side pockets
  • Dual ice axe loops with handle capture by upper compression straps

California residents: view proposition 65  Warning

Technical Specs

Best Use
Backpacking, Hiking
Top Loading
Item Dimensions
Xsmall/Small: 26.38" x 14.17" x 12.2"
Medium/Large: 28.35" x 14.17" x 12.2"
Fits Torso
Xsmall/Small: 13" - 17"
Medium/Large: 16" - 20"
Frame Material
3.5 mm LightWire Alloy
Hydration Compatible
Maximum Weight
30 lbs
Sternum Strap
Yes; Adjustable
Torso Adjustment
Xsmall/Small: 3173 cu in
Medium/Large: 3356 cu in
Limited Lifetime
Internal Frame Backpack
NanoFly 100D Nylon x 200D UHMWPE ripstop, PFAS-free DWR
Item Weight
Xsmall/Small: 1.93 lbs
Medium/Large: 2.06 lbs

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