CamelBak HydroBak Mil Spec Crux Hydration Pack 50oz Black. The included 1.5L 50oz Mil Spec Crux Reservoir delivers 25percent more water. Rear reservoir access flap Ideal for light and fast jobs. Specifications for CamelBak HydroBak Mil Spec Crux Hydration Pack: Manufacturer: CamelBak Color: Black Pack Application: Outdoor Size: 3.1 lb Weight: 0.4 kg Pack Type: Day Pack Features of CamelBak HydroBak Mil Spec Crux Hydration Pack: REAR RESERVOIR ACCESS FLAP FRONT ZIP POCKET HOLDS YOUR SMALL ESSENTIALS IDEAL FOR LIGHT AND FAST JOBS 50 oz 1.5L MIL SPEC CRUX RESERVOIR DIMENSIONS 12.2 IN x 8.3 IN x 4.3 IN 31 CM x 21 CM x 11 CM EMPTY RESERVOIR WEIGHT 1 LB 0.4 KG Package Contents: CamelBak HydroBak Mil Spec Crux Hydration Pack CamelBak 1737001000P: HydroBak Mil Spec Crux Hydration Pack 50oz Black