The Osprey Women's Sirrus 50 Pack is a ventilated backpack for overnight to weeklong trips into the backcountry. The Sirrus begins with the Airspeed™ suspension, combining a LightWire™ alloy frame with a 3D tensioned mesh backpanel and a spacer mesh harness and hipbelt to secure the pack to your back. The smooth fit wraps your back and shoulders and vents to allow your body to breath along the way, even when loaded up with gear for the week. The top pocket is removable in case you want to lighten the load and the lower zippered compartment houses your sleeping bag separately from the rest of your stuff. Strap an ice axe to the pack via the ice axe loop and utilize the Stow-On-The-Go™ trekking pole attachments for hands-free hiking. The integrated raincover keeps your gear on the inside dry in sudden storms.
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