Altitude Sports
Altitude Sports
Stratos 50




Stratos 50


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Hike Anywhere. Stay Ventilated.

The Stratos 50 combines ventilation innovation, stability and a top-loading design, for a feature loaded backpack that’s perfect for short backpacking excursions and Autumn overnights in the backcountry. Aside from its clean aesthetics, the Stratos 50 is a firm favourite for walkers and hikers thanks to its fully adjustable, ventilated AirSpeed™ back system. This system combines a single piece backpanel and hipbelt (which has a comfortable seamless interface) with highly breathable suspended mesh face, improving comfort in warmer conditions, even with a heavy load. Ergonomic shaping to the hipbelt, harness, yoke and backpanel further enhance its body-hugging comfort. Osprey equipped this pack with a zippered sleeping bag compartment that has a bellowed divider and gave it removable sleeping pad straps at the base of its exterior.

  • 50 & 47-litre sizes
  • AirSpeed™ ventilated back system
  • Ergonomically shaped hipbelt/harness/yoke/backpanel
  • Sleeping bag compartment with bellowed divider
  • Removable sleeping pad straps

Compartments, Pockets & Features

The Stratos 50 has a double-clipped lid opening, and its top lid is entirely removable. Under the lid, the main compartment secures with draw-cord, and a convenient vertical side zipper also allows quick access to the main compartment. The top has a large, easy access pocket and the pack front has a vertically zipped expansion pocket for items like rain shell. The side of the pack has stretch mesh pockets and dual compression straps that can be used for additional storage. Osprey further equipped this pack with a detachable raincover stored in the bottom pocket for enhanced weather resistance and gave it their Stow-on-the-Go™ trekking pole attachment system.

  • Top loader main compartment + side-zip access
  • Removable top-lid with zippered stash pocket
  • Under top-lid zippered mesh pocket
  • Side stretch mesh pockets
  • Dual side compression straps
  • Zippered hipbelt pockets
  • Ice tool loop with bungee tie-off
  • Integrated raincover
  • Internal hydration reservoir sleeve



  • [body] 210D nylon crosshatch
  • [accent] 420HD nylon packcloth
  • [bottom] 420HD nylon packcloth


  • S/M: 65D x 31W x 38D cm
  • M/L: 70D x 36W x 38D cm


  • S/M: 47 L / 2868 cu in
  • M/L: 50 L / 3051 cu in


  • Internal hydration reservoir sleeve
  • Compatible with Hydraulics™ & Hydraulics LT™ reservoirs

Suspension & Shoulder Straps

  • AirSpeed™ ventilated back system
  • Seamless hipbelt interface
  • Ergonomically shaped hipbelt, harness, yoke & backpanel

Pockets & Compartments

  • Top loader access to main compartment
  • Removable top-lid + zip stash pocket
  • Dual side stretch mesh pockets
  • Two vertical zip stash pockets on front panel
  • Front panel pleated fabric shove-it pocket
  • Zippered sleeping bag compartment with bellowed divider
  • Zippered hipbelt pockets


  • 47L: 1613g
  • 50L: 1670g

Recommended Use

  • Light Backpacking, Overnight Hiking Trips, Outdoor Adventures, Backcountry Excursions

Product style: osp-strat5053

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