Osprey hydraulics reservoir hosewhen its time to replace the hose on your existing hydration system ospreys hydraulics reservoir hose is the answer made of premium quarter inch tubing for reliable performance and featuring a high flow rate the hydraulics reservoir hose will bring new life to your hydration system all the parts used in the hydraulics reservoir hose are bpa free phthalate free and lead free all materials are certified food safe according to fda and eu regulations features