On your longest rides, the Utility Hydration Pack - Large, provides the perfect storage and hydration solution. Fox Utility Hydrations Pack Features 3L HydraPak® reservoir Fleece lined pockets for electronics 18L storage capacity Structured back pad to help retain shape Quick access pass-through zippered stash pocket Stretch mesh side pockets Side Compression straps to stabilize load Tool dividers Reflective trim Key clip 450D polyester diamond ripstop TPU face