Don't go dry! Hydrate!
A pack without a hydration reservoir is a pack not living up to its full potential. Why stop to pull out a water bottle when you can sip from a straw on your shoulder and keep on trucking? Osprey's Hydraulics® 2L Reservoir was designed with convenience in mind: a Side-Seal top opening provides easy filling and cleaning, a magnetic bite valve clip on the reservoir hose attaches to a sternum strap magnet for easy access, the reservoir hose disconnects from the reservoir with a pinch for ease for filling/draining/filtering, a Hydrostatic backerplate keeps the reservoir from bunching and distorting while pushing into the pack, and so on.
Guess what! We have this at our Davenport, IA store! Hot dawg.