A container comprising: ° a closure and ° at least one side wall panel, coated with a heat sealable polymer film layer, including a first pair of opposite side walls and a second pair of opposite side walls, having a rectangular cross-section, being connected along a single joint for storing pourable consumer products, and having a continuous folding line as a lower limitation of the closure, said closure being formed by four faces, each having a free edge so as to protrude from the folding line, a first and a second of said four faces connected to said first pair of opposite side walls along respective first and second fold lines, a third and a fourth of said four faces connected to said second pair of opposite side walls along respective third and fourth fold lines, each of said first and second faces including: ° folding lines extending from both ends of a respective one of the first and second fold lines to the free edge of the respective first and second faces, and ° scoring lines, said first and second faces being folded inwardly, said fourth face being folded over part of the first and second faces and connected thereto by a permanent seal, said third face face being connected to the first and second faces by heat sealing with inside sections of said third face being heat sealed onto outwardly folded sections of the first and second faces and with said folded sections securing respectively the first and second faces; characterized in that one part of a film element (12,14) is heat sealed inside the fourth face center edge area with a second part of said film element protruding from said fourth face center edge, and when the closure is folded and compressed, the film element is heat sealed onto the inside of a third face center edge area and onto the inside of said first and second faces, providing an air and liquid proof seal, and when opening the closure, a part of said first and second face sections sealed to said third face remains unbroken and another part of said first and second face sections remains attached to said third face by delaminating along the scoring line, forming a pouring opening. ° a closure and ° at least one side wall panel, coated with a heat sealable polymer film layer, including a first pair of opposite side walls and a second pair of opposite side walls, having a rectangular cross-section, being connected along a single joint for storing pourable consumer products, and having a continuous folding line as a lower limitation of the closure, said closure being formed by four faces, each having a free edge so as to protrude from the folding line, a first and a second of said four faces connected to said first pair of opposite side walls along respective first and second fold lines, a third and a fourth of said four faces connected to said second pair of opposite side walls along respective third and fourth fold lines, each of said first and second faces including: ° folding lines extending from both ends of a respective one of the first and second fold lines to the free edge of the respective first and second faces, and ° scoring lines, said first and second faces being folded inwardly, said fourth face being folded over part of the first and second faces and connected thereto by a permanent seal, said third face face being connected to the first and second faces by heat sealing with inside sections of said third face being heat sealed onto outwardly folded sections of the first and second faces and with said folded sections securing respectively the first and second faces;