Description of Osprey Aura 50 Backpack - Women's Lightweight and durable, the Osprey Aura backpack Series is the women’s specific counterpart to the award winning Atmos. Available in 50 and 65 liter versions the Aura’s Airspeed Suspension frame coupled with an ErgoPull hipbelt and thermoform shoulder straps help maximize comfort while reducing weight making it ideal for lengthy trips through the backcountry. The Osprey Aura 50 backpack combines Osprey's AirSpeed suspension with women specific fit and function. Features: Floating top pocket Large twin front pockets with welded water resistant zips Welded front stretch woven pocket Hydration cavity behind mesh panel with hydration tubing port holes Daisy chain with removable shockcord clips ErgoPull Hipbelt Removable Sleeping Pad Straps Stretch Woven Side Pockets Versatile Load Options Water Resistant Zippers Welded Stretch Woven Front Pocket Zippered Mesh Hipbelt Pockets Cu. in.: (s) 2800, (m) 3000 Liters: (s) 47, (m) 50 lbs/ oz.: (s) 2/15, (m) 3/1 Kg.: (s) 1.33, (m) 1.38