Osprey Ariel Plus 70

Osprey says:
Made for backpackers who go deep into the backcountry and journey beyond the reach for resupply, the Ariel Plus 70 is one of our largest volume women's-specific packs. Featuring a Custom Fit-On-The-Fly Hipbelt and Shoulder Strap for a truly fine-tuned fit. An AirScape(TM) backpanel creates a breathable, close-to-body fit while a stable carry manages heavy loads for your biggest adventures. A removeable top lid quickly converts to a spacious daypack. Constructed with high quality bluesignA(R)-approved high-tenacity nylon and PFC-free DWR.