A lockable slide fastener slider (10) comprises an upper wing (11) and a lower wing (12) defining therebetween a guide channel (14) for the passage of fastener coupling elements (E), a pull tab (20) pivotably mounted on the upper wing (11) and a locking member (26) having a locking prong (30) movable into and away from the guide channel (14). A resilient means (31, 31a, 31b, 31c) is provided in operative relation to the pull tab (20) for urging the latter to lie substantially flat against the upper wing (11). <IMAGE>
