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Osprey Sirrus 50 Litre Women's Overnight Hiking Backpack - latest model


Regular price $201.00

Tax included.

Now featuring adjustable torso lengths with the women's specific fit you trust Osprey for, the Osprey Sirrus 50 Women's Hiking Backpack is perfectly at home in the most humid, wet, or hot environments. This incredibly ventilated top-loading pack is loaded with features including an integrated raincover and is perfect for short backpacking trips or gear-laden hikes.

The supremely ventilated, featured and durable Sirrus Series receives a makeover that is more than skin deep for Autumn 2017. Now featuring adjustable torso lengths, improved women's specific fit and comfort with updated aesthetics, the Sirrus 50 is the go-to choice for everything from big day hikes to overnight jaunts in the backcountry. When the weather turns, fear not - Sirrus keeps your gear and pack protected with an integrated raincover. Smartly organized pocketing keeps all your equipment where you need it, when you need.


  1. Women's specific hipbelt and shoulder straps
  2. Integrated raincover
  3. Seamless hipbelt - no seams!
  4. Comfortable and ventilated tensioned backpanel with added adjustability for a fine-tuned fit
  5. Dual side compression straps
  6. Stow-on-the-Go™ trekking pole attachment
  7. Dual side stretch mesh pockets
  8. Front panel storage pocket
  9. Ice tool loop with bungee tie-off
  10. Integrated raincover
  11. Zippered hipbelt pockets
  12. Internal hydration reservoir sleeve
  13. Top-loading access to main compartment
  14. Removable top-lid with zippered slash pocket
  15. Under top-lid zippered mesh pocket
  16. Side panel zip access to main compartment
  17. Front panel pleated fabric shove-it pocket
  18. Dual vertical zippered slash pocket on front panel shove-it
  19. Zippered sleeping bag compartment with bellowed divider
  20. Removable sleeping pad straps

Volumes and Weights

US and International weight and volume specifications

Size liter kg.
WXS/WS 47 1.59
WS/WM 50 1.63


68 cm high x 32 cm wide x 35 cm deep

Key Fabrics used: 
  • Main: 210D Nylon Crosshatch
  • Accent: 420D Nylon Packcloth
  • Bottom: 210D Nylon Packcloth

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.
Sirrus 50 Litre Backpack WXS/S


Back Length 13-17"/33-43 cm 16-20"/40.5-51cm