A container for transferring a product with crossed protection, having a flexible portion connected to an opening provided with a flange in which is mounted a door that is mobile between a closed position and at least one open position, is characterized in that it includes a guide member 15 adapted to cause an internal portion of the wall of the flexible portion to project through the flange 11A or to retract that portion inside the container. A container of this kind is used to transfer a powder, a granular material or small objects, in particular, from the bottom of the container or from another container.