Basic Backpack City Fire Join Forces RED. LEGO® City Fire is here to Join Forces to conquer the firestorm. This year is sure to heat up with our Basic Backpack. A design with a spacious main zipper compartment and interior slip pocket designed to keep items closer to the back panel for comfortable transporting. An easy access side mesh pocket holds a water bottle or extinguisher. The front D-ring is designed to hold the coordinating Verti