<p>A zip (11) comprising: a plurality of teeth (13) each having opposed sides (713 and 715) and a hollow (517) that has a first open end (519) located in one of the sides (713) and a second open end (521) located in another of the sides (715); a slide (15) that is movable along the teeth (13) in order to effect alignment of the teeth (13) such that the hollows (517) form a passage (537); and a securing member (17) that can be located in the passage (537) in order to secure the teeth (13) together.</p>
