An opening and reclosing device for a container, the opening and reclosing device comprising: an affixing means for affixing the opening and reclosing device to a container; an integral cutting tool for creating an opening in the container in a prescribed manner; and a zip-locking mechanism for re-closing the created opening, the zip-locking mechanism comprising a slider, the integral cutting tool comprising: a blade tip at a first end thereof, a thumb tab at a second end thereof; and a coupling means provided between the first and second ends, which coupling means provides for pivotal connection of the integral cutting tool to the slider, such that the integral cutting tool is pivotally moveable between: a first deployed position wherein the blade tip protrudes out of the slider for cutting an opening in a container; and a second stowed position.