Description of Osprey Aura 50 Backpack - Women's The Aura 50 provides the ideal volume for your next superlight backpacking experience. At 3000 cubic inches and with an average weight of 3.5 lbs./ 1.5 kg, you can carry your superlight essentials with ease and comfort. A traditional floating top pocket/top load design and twin front pockets with welded water resistant zips makes loading easy. Other features include an internal hydration sleeve, zippered mesh pockets on the hipbelt and removable sleeping pad straps. REDESIGNED FOR 2009! Light and Fast, Backcountry Adventure Features: Floating top pocket 2 side zippered front pockets Dual vertical zip front pockets InsideOut™ Compression Stow-on-the-Go™ Trekking Pole Attachment Tool Attachment Top Pocket Removal In: 28x13x12 (Cm: 71x34x30)