An article of manufacture may be adjustable and may include a cage (101) having a plurality of apertures (107) and an insert (103) having a frame (109) with a plurality of projections (111) that extend from the frame. The insert may be inserted into the cage and may cause the cage to expand to the shape of the insert. The projections on the frame may extend through the apertures of the cage when the insert is inserted into the cage. The cage may be capable of expanding to a plurality of sizes and shapes of various inserts. The article of manufacture may be an article of footwear, a container, an article of apparel, a textile, and any other object of manufacture.