Abstract: A child-resistant locking device for a flexible bag, pouch or the like having an opening and requiring child-resistant packaging which is to be filled with hazardous articles including a zipper operatively associated with the opening and movable between an open and closed position, the zipper being provided with a pull tab having an opening for actuating the zipper and a releasable lock supported on the bag operatively associated with the pull tab opening for releasably retaining the zipper in the closed position with the lock including elements requiring manual dexterity with both hands at a skill level common to an adult as opposed to a child for release.