A slider (54, fig. 5B) mounted within a container 2 has sidewalls 60,104 terminating at a position spaced from an end wall 67. Flaps 68, 70 are connected to side edges of the end wall along foldlines, each flap being folded toward an end of the sidewall on its respective side of the slider and extending over at least a portion of the distance between the end of the sidewall and the end wall. A package with an insert, slidably mounted in a container, comprises an end wall, a first end that is closest to the end wall of the container, and a second end defined by the end wall of the insert. The end wall is connected at a first edge to a first panel and is connected at a second edge to a second panel. The first and second edges are connected by side edges of the end wall. At least the first panel of the insert is a panel of a blister pack carrier, and the insert comprises at least one flap connected to a respective side edge of the end wall along a foldline.
