One large main compartment with two inside zippered pockets. Storm flap with adjustable quick-release buckles, and Velcro closures to insure security. Numerous inside pockets, storage compartments, ID tag, key ring hook. Removable and adjustable padded shoulder strap with removable cell phone holder. Size: 11" x 18 1/2" x 6" Olive Drab, Black Zippered pockets for added security.