Packaging with outer sleeve and slider

A package includes an outer sleeve and a slider for holding a blister pack slidably mounted within the outer sleeve. The outer sleeve includes a wall having an outer panel and an inner panel. The inner panel has a locking edge formed at a terminal end thereof spaced from and facing a closed end of the sleeve. A locking flap is formed at a terminal end of the slider extending in a direction away from a closed end of the outer sleeve for engagement with the said wall of the outer sleeve. The flap has a free edge for engagement with the locking edge of the inner panel to prevent the slider from being removed from the outer sleeve when the slider is fully received within the outer sleeve. The outer panel of the outer sleeve includes a release button at least partially overlapping the flap of the slider when the slider is fully inserted in the outer sleeve, and being pressable so as to disengage the free edge of the slider flap from the locking edge of the outer sleeve wall to permit the slider to be withdrawn from the outer sleeve.