NcStar Tactical Backpack 2911 has a large zippered clam-shell main compartment and an internal zippered pocket. A separate divided compartment for a hydration bladder lets you convert the pack into a hydration pack. Other features include padded shoulder straps, waist & sternum straps, two adjustable compression straps on each side of the military back pack, and six external zippered pockets providing ample storage space. The front pockets and bottom of the back pack has PAL compatible webbing to make the NcStar Tactical Back Pack a modular system. The back pack also has carry handle straps on the top and on both sides of the back pack.