Tri-Zip 100 oz3.0L ACU Digital CamouflageProduct ReviewP Click on the link for more reviewsPHydration Capacity: 100 oz 3 LPTotal Capacity: 1891 cu in 31L + 3L ReservoirPTotal Weight (Pack and Reservoir): 4.5 lbs 2 kgPDimensions: 22 x 14.5 x 11.5 in 56 x 37 x 29.