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Sirrus 44L Backpack
Size:
Quantity
Only 2 In stock
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Warning: California Proposition 65
Ventilated comfort and trail performance with the Sirrus 44L Backpack
What Our Gearhead® Experts Are Saying:
“The Sirrus 44 hits that perfect balance between lightweight and capable. The AirSpeed suspension is unmatched for airflow and comfort on steep climbs, and the torso adjustment makes it fit just right. I use it for quick overnights or hut trips where I want space but not bulk.”
From fast-paced overnights to hut-to-hut treks, the Osprey Sirrus 44L Backpack delivers the perfect mix of breathable comfort and smart organization. Designed specifically for women, this pack’s adjustable AirSpeed™ suspension keeps air flowing while supporting up to 30 pounds with ease, so we can focus on the trail—not the load.
The 44-liter capacity offers plenty of space for layers, food, and camping gear, with both top and side access points for easy packing. The fixed lid design provides extra storage and protection, while the Stow-on-the-Go trekking pole system lets us transition quickly between climbs and descents. An integrated rain cover and durable, recycled nylon construction ensure we’re ready for any weather that rolls in. Whether it’s a quick overnight or a multi-day mission, the Sirrus 44L combines durability, adjustability, and performance for any adventure.
Details
- 44L women’s backpack built for fast-and-light overnights
- AirSpeed™ suspension system enhances ventilation and comfort
- 4in torso length adjustment for a custom women’s-specific fit
- Top and side access points simplify gear organization
- Stow-on-the-Go trekking pole and ice axe carry systems
- Includes rain cover with PFAS-free DWR for wet-weather protection
- Sleeping bag compartment with floating divider for easy packing
- Constructed from durable, recycled, bluesign®-approved nylon
- Item #OSPZ1RS
- Responsible Collection
- [nylon] bluesign®️ APPROVED, Recycled/Repurposed
- Material
- [face fabric] 210D recycled nylon, PFC/PFAS-free DWR finish, [accent, bottom] 420D recycled nylon, PFC/PFAS-free DWR finish
- Volume
- 44L (2685cu in)
- Support/Suspension
- adjustable AirSpeed suspension system, 4mm powder-coated LightWire frame, AirSpeed suspension backpanel
- Shoulder Straps
- die-cut EVA foam, spacer mesh, adjustable sternum strap (whistle buckle)
- Waist Belt
- die-cut EVA foam, spacer mesh, ErgoPull closure
- Hydration Compatible
- internal bladder sleeve (with backpanel hose port)
- Access
- top
- Pockets
- [external] 1 zippered front stash, 1 zippered side, 2 side stretch mesh water bottle, 2 zippered lid (one with key clip), 2 zippered hipbelt, [internal] underlid zippered mesh with key clip
- Gear Loops
- front panel lash loops, bottom accessory straps
- Ice Axe Carry
- 1 ice axe loop (with bungee tie-off)
- Trekking Pole Carry
- Stow-on-the-Go attachment
- Sleeping Bag Compartment
- zippered bottom access with floating divider
- Compression
- dual-side
- Rain Cover
- included, PFC/PFAS-free DWR
- Dimensions
- 27.2 x 14.6 x 11.4in
- Claimed Weight
- 3lb 8.3oz
- Activity
- backpacking
- Manufacturer Warranty
- limited lifetime

Built For The Long Haul
Osprey Packs focuses on one thing: packs that fit just right, carry comfortably, and hold up to years of use. Osprey stands for gear you can trust enough to forget about until the adventure’s done.
Cancer - P65Warnings.ca.gov