The adjustable zipper pull assembly includes a cord having a plurality of protrusions extending from the cord. A slidable member is disposed on the cord and is slidable relative to the cord. The slidable member includes a first aperture that receives a first region of the cord, and a second aperture that receives a second region of the cord such that the cord defines a closed loop. The slidable member and the protrusions are flexible relative to one another in order to enable the slidable member to slide over the protrusions while sliding relative to the cord, which adjusts a size of the closed loop about a top portion of a zipper slider. The adjustable zipper slider assembly may be used to avoid replacing a damaged zipper slider.