Portable variable capacity backpack

摘要: A portable, variable capacity locker having detachable shoulder straps, wheels, a handle, at least one compartment, and expandable of which the intended primary use is for storage books schools supplies in lieu school locker. The defines compartment top closure an lower portion. portion defined by flexible expansion sleeve, wherein mating parts zipper, or other suitable closure, are respectively provided bottom edge sleeve. By fastening together edges circumferentially zippered wall formed above base. Thus, when zipper zipped sleeve collapsed state, functional sturdy pack may be transport decreasing volume; its expanded state (i.e. unzipped), allowed to unfold vertically enlarge walls increase volume compartment. Wheel assemblies attached base thus enabling user roll on surface compartments fully extended loaded. also includes pouch with security tether, harness straps serve alternative function as pull strap.