Abstract: A zip slider comprises: a body (200) having two channels through which opposing rows of zip teeth may be respectively fed into a single channel in which the zip teeth are forced into interdigitation; upper and lower jaw members (114, 140) mounted on the body (200) and defining a slot between them; a biasing member (180), pivotally mounted on the body (200), and being pivotable in a first direction between a rest position and a deflected position, wherein pivoting of the biasing member (180) out of the rest position permits insertion of a loop of a pull tab into the jaws (114, 140) and, in the rest position, the biasing member (180) prohibits removal of the pull tab from the jaws (114, 140).