The most popular tactical backpack, the RUSH12 is designed to provide superior storage capacity and organization without slowing you down.Main Compartment – 18 inch x 11 inch x 6.5 inch,Front pocket – 12 inch x 9 inch x 1.75 inch,Hydration pocket -17 inch x 11 inch,Left and Right Side Pockets – 16.5 inch x 6 inch x 1.75 inch,Total Capacity – 1476 cubic inch / 24 liter total