When day hikes stretch out into more committing endeavors, the Osprey Sirrus 36 women's hiking pack is the perfect in-mid-size option. Its top-loading design, topped by a fixed top lid, helps make packing a breeze. Plus, with its highly ventilated AirSpeed® suspensions system and just enough volume to empower your bigger pursuits, it inspires long days and lightweight nights exploring our more rugged trails, rain or shine. Made with 100% recycled materials. The supremely ventilated, featured and durable Sirrus Series receives a makeover that is more than skin deep for Autumn 2017. Now featuring adjustable torso lengths, improved women's specific fit and comfort with updated aesthetics, the Sirrus 36 is the go-to choice for everything from short day hikes to lightweight overnights in the backcountry no matter how far, or near. When the weather turns, fear not - Sirrus keeps your gear and pack protected with an integrated raincover. Smartly organized pocketing keeps all your equipment where you need it, when you need. Features Women's specific hipbelt and harness  Ventilated and comfortable AirSpeed Suspension and spacer mesh harness Seamless Hipbelt - no seams! Integrated raincover Dual side compression straps Stow-on-the-Go™ trekking pole attachment Dual side stretch mesh pockets Front panel storage pocket Ice tool loop with bungee tie-off Integrated raincover Zippered hipbelt pockets Internal hydration reservoir sleeve Top-loading access to main compartment Under top-lid zippered mesh pocket Fixed top-lid with zippered slash pocket Side panel zip access to main compartment Front panel vertical center zippered pocket Zippered sleeping bag compartment with bellowed divider Removable sleeping pad straps Osprey Sirrus 36 Litre Women's Overnight Backpack