Osprey Sirrus 44

Product Highlights
  • Included raincover made with PFC/PFAS-free DWR and bluesign® approved materials
  • Zippered front stash pocket
  • Dual zippered hipbelt pockets
  • Side stretch mesh bottle pockets
  • Internal hydration sleeve with hose port in backpanel
  • Stow-on-the-Go trekking pole attachment with new soft-touch tubes
  • Single ice axe loop with bungee tie-offs
  • Top loading design with a secure drawcord closure
  • Fixed top lid with large main compartment and underlid zippered mesh pocket with key clip
  • Hidden vertical side zip access into main compartment for quick access to contents
  • Zippered access lower compartment with a floating liner keeps contents organized and accessible
  • Accessory straps on lower front panel are perfect for pads or blankets
  • Hidden vertical zipper on left side of pack accesses a large pocket for additional storage

A Technical Pack, Made for Lengthy Day Trips or Lightweight Overnights

When your day trips are extensive and your necessities list is long or when your overnight supplies are few, the Osprey Sirrus 44 is just the right size. Osprey's dynamic fit system and Airspeed ventilation helps to keep you cool and comfortable regardless of load size.

The taller, and wider frame is adjustable to your comfortability in a pinch. This women's specific backpack combines versatility and comfortability and gives you all the space you need for everything else.

Loaded with pockets and features, the Sirrus 44 is fully functional for any type of trek. The bag size itself is perfect for long pack lists of any important belongings. A reservoir pocket holds most reservoir sizes for on the go hydration.

An ice axe loop and auxiliary loops work for stow-on-the-go trekking pole holders. Once everything is packed away, the top-loading closure has pockets of its own for easy access belongings.

Includes: Rain cover

Details & Specifications

Best Use:

Day Hiking / Trekking


44 Liter


3.5 lbs


27.17" x 14.57" x 11.42"


Main - bluesign® approved 210D recycled honey comb nylon, PFC/PFAS-free DWR

Accent - bluesign® approved 420D recycled nylon, PFC/PFAS-free DWR

Bottom - bluesign® approved 420D recycled nylon, PFC/PFAS-free DWR

Load Range:

15 - 30 lbs

Airspeed Ventilation:

Injection-molded suspension system w/ 3D-tensioned mesh provides breathable support

Fit System:

Taller, wider frame geometry combines with tailored adjustment system to extend fit range


Yes - breathable mesh back panel

Hydration Compatible:

Yes - internal hydration/reservoir compatible

Gear Loops:

Yes - attached loops for stow and go trekking pole carry as well as ice axe loop and gear ties

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Injection-molded suspension system w/ 3D-tensioned mesh provides breathable support
Taller, wider frame geometry combines with tailored adjustment system to extend fit range
Included rain cover made with sustainable bluesign® approved materials
Highly ventilated die-cut EVA foam is wrapped in wide spacer mesh for outstanding comfort in all weather conditions
3D-tensioned breathable mesh backpanel ensures supportive fit
More Information
Gender Women
Activity Mountain Trekking/Hiking, Mountaineering, Camping
Equipment Type Packs
Fit One Size
Gear Category Packs
Brand Osprey
Size 164 cm
Shipping Highlights

Shipping Notes:

  • Free Shipping for All Purchases Over $75
  • Expedited Shipping Options Available for All Purchases
  • 30 Day Returns For Purchases of New Items

To see more information regarding Shipping, Returns and Cancellations please see our full policy here.

About Osprey

Osprey's Mission: To relentlessly innovate and ease your journey and inspire adventure. Their guiding principles: Innovation. Integrity. Quality. Respect. Stewardship. Since Osprey was founded in 1974, every single product design has passed through the hands of owner and founder Mike Pfotenhauer, who created his first backpack at age 16. And since the start, sustainability has been part of their core values — from building the most durable products possible to launching the All Mighty Guarantee to introducing high-quality recycled materials and better chemistry. Bottom line: They are committed to building innovative, high-performing products the right way — designed to be with you for your lifetime.

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