Women's backpack Osprey Sirrus 36 II. -Adjustable AirSpeed™ ventilated trampoline suspended mesh backpanel-Adjustable torso length-Base zip entry-Integrated & detachable raincover-Internal hydration sleeve-Internal key attachment clip-Removable sleeping pad straps-Side compression straps-Single ice axe loop-Single vertical zippered side access point-Sternum strap with emergency whistle-Stow-on-the-Go™ trekking pole attachment-Top lid access-Twin zippered hip belt pockets-Under lid zipped mesh pocket