Extensible connecting piece

A package for liquids comprising a container (2) having an opening (4) and a tubular connecting piece (6) connected to the container and arranged for dispensing, via the opening, liquid from an inner space of the container (2) in a connecting piece can at least be brought from a first position into a second position, the connecting piece comprising an outer tube (8) manufactured from flexible material and an inner tube (10), the inner tube and the outer tube in the first position each being located at least substantially in the inner space (12) of the container, the outer tube (8) comprising a sliding part (14) which in the first position tightly encloses a top side (16) of the inner tube and a flexible collar (18) which in the first position extends upwards from a top side (20) of the sliding part and is connected, adjacent its top side (22), to the container, the top side (16) of the inner tube in the first position being slid concentrically into the sliding part of the outer tube, the inner tube being included in the outer tube so as to be telescopically slidable, the sliding part of the outer tube forming a liquid seal with an outer side (24) of the inner tube, and the outer tube in the first position extending at least substantially from the opening from the opening into the inner space of the container while the top side (16) of the inner tube extends to a position adjacent the top side (22) if the collar (18), so that for putting the package into use, the inner tube can be pulled outwards through the opening from an outer side of the container while the inner tube slides telecopically in the sliding part and the collar (18) of the outer tube is also deformed such that said collar is turned inside out when the collar (18) of the outer tube is pulled outside through the opening, the inner side of the collar (18) in the first position forming an outer side of the collar (18) in the second position and an outer side of the collar (18) in the first position forming an inner side of the collar (18) in the second position, wherein the sliding part (14) is of tubular design, the tubular sliding part (14) tightly enclosing the inner tube in the first position and in the second position.