NcStar Backpack Model 3003 With Front and Rear Compartment For Soft BodyThe main backpack storage compartment measures 17"H X 12"W X 4"D. The outside of the backpack features 3 zippered compartments measuring: 10"H X 10. 5W X 1. 5"D compartment, 9"W X 7. 5"H, & 10"H X 10. 5W pockets. On each sides of the backpack features elastic top mesh pockets perfect for carrying water bottles or small items. There is a dedicated body armor storage compartment for the front carrier and a pocket for the back body armor panel plate.