Offering unparalleled design and features in ventilated pack that looks good and carries great, the Osprey Women's Sirrus 50 is ready for any adventure, from overnights to week long trips. . Torso specific sizing and contoured harness and hipbelt provide a superb custom fit for women. AirSpeed suspension incorporates a LightWire Alloy frame with a 3D tensioned breathable mesh backpanel to provide all day comfort, eliminate hot spots, and offer superb ventilation. Removable top pocket with twin zippered pockets helps keep smaller gear organized and easy to access. Front panel access to the main compartment makes it easy to find your gear quickly. Zippered sleeping bag compartment with divider keeps your bag easily accessible and separate from the rest of your gear. Upper straps and InsideOut compression straps which can be routed externally or internally through the side pockets help secure your gear, minimize pack volume, and improve load stability. Zippered pockets on the hip belt keep small items easily accessible. Two mesh woven side pockets are ideal for stashing water bottles. Integrated rain cover will help keep your valuables safe and dry in any weather condition. Includes Stow on the Go trekking pole attachment and an ice axe loop to keep hands free and your tools safe and secure. Removable sleeping pad straps. Hydration compatible. Ideal for carrying loads between 25 and 40 lb.