A package 106 includes a container 2 having an open end and a closed end, and a slider (54, fig. 5B) slidably mounted within the container. A releasable locking feature is provided at a side of the package, which comprises a pair of locking edges 104, one associated with a sidewall of each of the slider and container respectively, and a release area 18 for releasing a locking abutment between the locking edges. The release area is provided in the sidewall of the container having the locking edge. The locking edges cooperate to prevent movement of the slider out of the open end of the container until a user manually applies pressure to the release area to deflect the locking edge of the slider out of abutment with the locking edge of the container to permit the slider to slide past the locking edge of the container. In a first aspect of the invention the locking edge of the slider comprises two or more plies of material. In a second aspect of the invention the locking edge of the slider is biased into engagement with the locking edge of the container.
