Product Overview
The Osprey Sirrus 34L Women’s Hiking Backpack is engineered for women who demand performance, comfort, and reliability on the trail. With a 34-liter capacity, this backpack strikes the ideal balance between spaciousness and manageability, making it perfect for day hikes, overnight trips, or extended explorations. Its panel-loading main compartment offers effortless access to your gear—no more digging through everything to find what you need. The women-specific design features a taller and wider frame geometry that aligns with natural body proportions, ensuring a secure and comfortable fit from the first step to the last.
Built to move with you, not against you, the Sirrus 34L incorporates Osprey’s renowned AirSpeed suspension system. This innovative suspension uses an adjustable, injection-molded frame and 3D-tensioned mesh to lift the pack away from your back, promoting airflow and reducing sweat buildup during long treks or steep ascents. Combined with a molded ladder adjustment system, the torso length can be fine-tuned to match your frame, extending the usable fit range across different body types. Whether you’re carrying a light day load or fully loaded for a multi-day adventure, the Sirrus delivers a stable, balanced carry.
Sustainability meets rugged durability in its construction. The main body fabric is made from bluesign-approved, 100% recycled nylon, reflecting Osprey’s commitment to environmental responsibility without compromising strength or weather resistance. Every detail, from the burly #10 zipper on the main compartment to the thoughtfully placed pockets and straps, is designed for real-world use by active women.
Key Features
- AirSpeed Ventilation System: The adjustable, injection-molded suspension with 3D-tensioned mesh lifts the pack off your back, creating continuous airflow between your spine and the pack. This breathable design keeps you cooler during strenuous activity and enhances comfort over long distances, even in warm conditions.
- Women-Specific Fit with Molded Ladder Torso Adjustment: Unlike generic designs, the Sirrus 34L is built for a taller, wider female frame. The integrated molded ladder system allows you to adjust torso length to achieve a personalized fit, ensuring the shoulder straps, hip belt, and load lifters all align perfectly with your anatomy.
- Included Raincover: A durable, integrated raincover protects your pack and contents from unexpected downpours. Stored inside the pack when not in use, it deploys quickly and securely, keeping your gear dry without interrupting your journey.
- Panel-Loading Main Compartment: Access your gear instantly through the large, full-zip main compartment. The panel-loading design means you can reach items at the bottom without unpacking the entire pack—ideal for organizing clothing, food, and essentials efficiently.
- Internal Hydration Sleeve with Hose Port: Stay hydrated hands-free with the dedicated internal hydration reservoir sleeve. The hose port on the backpanel routes your drinking tube directly to the right shoulder strap, letting you sip comfortably while hiking.
- Durable Bluesign-Approved Fabric: Constructed from 100% recycled nylon certified by bluesign, this material offers excellent abrasion resistance and weather protection while supporting sustainable manufacturing practices.
Technical Specifications
- Capacity: 34 liters
- Item Dimensions: 22.4″H x 14.2″W x 10.6″D inches
- Item Weight: 3.04 lb (1.38 kg)
- Main Body Fabric: Bluesign approved, 100% recycled nylon
- Suspension: AirSpeed with 3D-tensioned mesh
- Torso Adjustment: Molded ladder system
- Main Compartment Closure: Burly #10 zipper (panel loading)
- Hydration Compatible: Yes (internal sleeve with hose port)
- Raincover Included: Yes
- Hip Belt: Padded and contoured
- Shoulder Straps: Padded with load lifters
- Side Compression Straps: Dual-adjust for load stabilization
- Attachment Points: Trekking pole carry system
- Stow-on-the-Go™ trekking pole attachment included
Benefits & Use Cases
The Osprey Sirrus 34L Women’s Hiking Backpack is ideal for outdoor enthusiasts who value a blend of performance, comfort, and thoughtful design. Its 34-liter capacity provides ample room for clothing, food, camping gear, and personal items—perfect for weekend getaways, mountain excursions, or multi-day treks where you need reliable organization and easy access.
The women-specific fit ensures that weight sits high and close to your center of gravity, enhancing stability on uneven terrain. The AirSpeed suspension system keeps your back cool even during intense climbs or long days in the sun, while the adjustable torso length accommodates a range of body types without sacrificing support.
For those who prioritize sustainability, the use of bluesign-approved recycled materials means you’re choosing a product that minimizes environmental impact without compromising on quality or durability. Whether you’re navigating forested trails, rocky ridges, or exposed summits, the included raincover adds essential protection in unpredictable weather.
This backpack excels in versatility: use it for a solo day hike, pair it with a tent and sleeping bag for an overnight trip, or integrate it into a longer thru-hike setup. The side compression straps allow you to adjust the volume as needed, and the Stow-on-the-Go™ system lets you deploy or store trekking poles without removing the pack.
Important Notes
- This backpack is designed for general hiking and backpacking use. It is not rated for extreme alpine or technical mountaineering environments such as ice climbing, rock climbing at advanced grades, or high-altitude expeditions above 4,000 meters.
- The included raincover is stored within a zippered compartment inside the main body of the pack. To deploy it, you must unzip the interior pouch, remove the cover, and pull it over the top of the pack. It is not a roll-top or fully sealed design—water resistance depends on proper deployment and fit.
- Proper torso adjustment is essential for optimal comfort and performance. We recommend testing the fit before embarking on extended trips. The molded ladder system allows for incremental adjustments, but achieving the correct fit may take time and practice.
- While the pack is compatible with most standard-sized hydration reservoirs (up to 3 liters), always ensure the reservoir fits snugly in the internal sleeve and that the hose exits cleanly through the designated port.
- Do not overload the pack beyond its intended capacity or weight limits. Excessive strain can compromise suspension performance and lead to discomfort or injury.
