The osprey raptor 14 hydration pack has an integrated 3 litre hydraulics reservoir which ensures that you can carry all the required gear and liquid prepare to go even faster and further with our raptor hydration backpacks the raptor 14 and integrated 3 litre hydraulicstrade reservoir ensure that you can carry all the required gear and liquid to perform your personal best keep hydrated on the toughest of rides with easy access to the reservoir via an asymmetric zip