Abstract: The present invention relates to a closure device for a package comprising a first panel (2) and a second superposed panel (3) with superposed through-openings (5) and a third panel (4) with at least one opening (11), the third panel (4) being able to occupy two positions in which the opening (11) is either superposed on said openings (5) of the other panels (2, 3) or is not superposed thereon. The second panel and/or the first panel (3, 2) comprises at least one tube (6) attached in a substantially perpendicular manner to its surface oriented toward said first panel (2) respectively the second panel (3) and housing a channel in communication with said at least one opening (5) of the second panel (3) respectively of the first panel (2), said at least one tube (6) making it possible to attach the first panel (2) and the second panel (3) together.