Osprey Manta Ag 28 Hydration Pack Hiking Backpack Color - Sonic Blue Great condition! So many pockets and compartments to store different items. 2.5 Liter / 85 ounce water reservoir 28L Volume - Stretch Mesh Front Pocket Large front stretch mesh pocket for quickly stashing extra gear. - Helmet Attachment Loop Located just below the Osprey logo near the top of the font panel, the helmet attachment loop keeps your helmet securely in place while not in use. - Blinker Light Attachment The blinker light attachment strap found near the base of the front panel of the pack allows for quick light attachment for high visibility in the dark. - Stretch Mesh Side Pockets Dual stretch mesh side pockets provide additional, easily accessible storage options. - Zippered Hipbelt Pockets Dual zippered hipbelt pockets provide secure storage for often needed items. - Hydration Compartment Direct zip access hydration compartment for spill-free refills. Hydraulics LT 2.5 reservoir included. - Stow-On-The-Go Trekking Pole Attacahment Osprey’s unique Stow-on-the-Go system allows users to tuck away trekking poles quickly without having to remove their packs.