Keep fully recharged with the fully loaded Hydrapak Laguna Hydration Pack. A hydration pack that expands into a full-sized day-pack, the Laguna holds 100 fl. oz. of liquid so you have refreshment no matter where you travel, as well as 800 cu. in. of storage for your hiking gear. Outfitted with a Hypalon reinforced section on its shoulder strap, a new wrap-around sternum strap and a suspension padded back with airflow channel, this Hydrapak hydration pack is comfortable to wear all day long. Other features include a built-in mesh net where you can store your helmet and one-finger-opening utility pocket for quick access. Pick one up for $89.99. Hydrapak.