Abstract: These containers for fluid materials have a piercable sealing element that is easier to locate and pierce. A fitment, sealed between edges of a front and a rear panel, has a tubular opening covered by a frangible seal of piercable barrier material. The spot to be pierced with the straw is well defined and, since the seal is held securely by the fitment, easier to pierce. In addition, the placement of the fitting minimizes the risks of puncturing both sides of the container.