Osprey Packs Women's Viva 50 Backpack Floating Top Pocket - A floating zippered top pocket with under lid zippered mesh pocket organizes smaller items and can extend to handle oversized loads Stow-on-the-Go Trekking Pole Attachment - Ospreys unique Stow-in-the-Go system allows users to tuck away trekking poles quickly without have to remove their packs Internal Hydration Sleeve - An internal reservoir sleeve is located in the main body of the pack Zippered Hipbelt Pockets - Dual zippered hipbelt pockets provide secure storage for often needed items Sleeping Bag Compartment - Wide mouth access sleeping bag compartment with divider stows your bag out the way