5.11 Tactical Rush Tier System Modular storage enhancement system Attaches to 5.11 RUSH/MOAB series bags Quick connect/disconnect High impact buckle hardware Compatible with hydration systems up to 60 oz. 16 total compartments, pockets, and slots to stow and organize your gear Large zippered Administrative compartment with 9 pockets and slots Compatible with hydration systems up to 60 oz. Main compartment: 18" x 11" x 6" Capacity: 1296 cu in/21.2 liters