Abstract: A shoe sole mold for molding unit soles comprised of plastic-like material, where one of the mold halves has a retractable channel forming mechanism or design forming wall portion therein. The retractable mechanism may be used to fabricate holes in the sole or make a design in the wall of the sole during injection of the material into the mold cavity. The mechanism is then retracted into its respective mold and leaves behind a formed channel or image arranged in the unit sole material after it has set, and which unit sole may then be removed from the mold cavity. The channels or holes in the soles may then be used to secure straps or the like to the soles during subsequent manufacture of sandals or the like.