Osprey Men's Exos Pro 55 Ultralight Backpacking Pack

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The ultralight Exos Pro 55 is ideal for committing thru-hikes when you want to shave as much weight as possible but still need to a comfortable carry. It features a more fine-tuned adjustment system for its ventilated AirSpeed™ suspension system than other Exos models, a comfortable ExoForm™ harness and hipbelt and the ability to strip out the removable floating lid, compression and sleeping bag straps when you need to cut as many grams as possible. Comfort, without weighing you down.


  • Load range 5-18kg
  • Ultralight Airspeed™ suspension:
    • Lightweight injection-molded ladder adjustment system provides 10cm of torso adjustability
    • Two-size-per-gender design ensures perfect fit and allows for quick, easy adjustment
    • 3.5mm powder-coated LightWire frame balances support and dynamic flex
  • 3D-tensioned breathable mesh backpanel ensures a supportive fit and a silicone print on the lumbar fabric enhances hipbelt grip
  • ExoForm™ harness:
    • Shoulder straps combine reverse spacer mesh, die cut EVA foam and a unique structured 3D mesh to deliver excellent support and ventilation
    • Ventilated mesh yoke evenly distributes load for comfort while maintaining breathability
    • 15mm adjustable slide sternum strap with integrated safety whistle
  • ExoForm™ extended hipbelt: EVA foam padded hipbelt offers dynamic stretch for a secure, dynamic fit, zipped pocket provides secure storage and an open pocket allows for quick access to snacks or empty wrappers
  • Removable, floating single compartment top lid with key clip
  • Four webbing lash points on top lid
  • FlapJacket secures main compartment access and provides weather protection when lid isn't used
  • Integrated FlapJacket™ protects packed gear when top lid is removed
  • Removing the top lid reduces carry capacity by 9 litres and weight by 80g
  • Internal hydration sleeve with centre back hose port and Osprey Hydraclip for easier reservoir hanging
  • Internal compression strap keeps you load stable
  • Large front fabric compression pocket with stretch panels accommodates overloads
  • Deep, dual-access stretch mesh side pockets
  • Multiple front panel lash points for securing extra gear
  • Dual ice axe loops with handle capture by upper compression straps
  • Strippable lower side compression straps
  • designed to capture sleeping pad on the front panel


Capacity 55 Litres (Small-Medium), 58 Litres (Large-XL)
Dimensions 72 x 38 x 31cm (Small-Medium)
77 x 38 x 31cm (Large-XL)
Harness ExoForm™
Average Weight 940g (Small-Medium), 980g (Large-XL)
Made From NanoFly™: 100D Nylon x 200D UHMWPE ripstop, DWR treatments made without PFAS


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