CamelBak: Built for the rigors for of daily use, the HydroBak is an economical hydration solution that is ergonomic and versatile. The included 1.5L, 50oz Mil Spec Crux Reservoir delivers 25% more water.FeaturesRear reservoir access flapFront zip pocket holds your small essentialsIdeal for light and fast jobs SpecificationsUser Group: UnisexBPA/BPS/BPF Free: trueDimensions: 31 x 21 x 11 cm / 12.2 x 8.3 x 4.3 inQuick Link: falsePack Weight: 0.4 kg / 0.9 lbHydration Type: Mil Spec CRUX™ Reservoir with Standard Exit PortHydration Capacity: 1.5L/50 fl oz