A flexible bag (10) with a single or multiple chambers for storing medical products comprising a hanging tongue (11) extending from the upper end of said bag, characterized in that said tongue (11) contains a) first cuts (1, 2) mirror inverted circular with an angle of 145º to 180º, in which one end of each of said cuts (1, 2) is separated by a first connection cut (3) that is essentially straight with a length 4 to 10 times the radius of said first circular cuts (1, 2), and b) a few seconds two inverted (4, 5) mirror cuts with an angle of 180º to 270º with a radius of 0.3 to 0.7 the radius of said first cuts ((1), (2)), in which one end of each of said cuts ((4), (5)) is separated by a second cut (6) connecting with the shape of the letter "U", c) in which said first and second cuts ((1), (2), (4), (5)) are located along a geometric axis of symmetry common specular triad through the centers of said first and second connection cuts ((3), (6)) and the base of said letter "U" and d) the distance from the center of said first connection cut (3) and of the base of said letter "U" is 0.5 to 1.5 times the radius of said first ((1), (2)) circular inverted mirror cuts.Un saco (10) flexible con una única o con múltiples cámaras para almacenar productos médicos que comprende un lengüeta (11) de colgado que se extiende desde el extremo superior de dicho saco, caracterizado porque dicha lengüeta (11) contiene a) unos primeros cortes (1, 2) circulares invertidos especulares con un ángulo de 145º a 180º, en la que un extremo de cada uno de dichos cortes (1, 2) está separado por un primer corte (3) de conexión que es esencialmente recto con una longitud de 4 a 10 veces el radio de dichos primeros cortes (1, 2) circulares, y b) unos segundos dos cortes (4, 5) invertidos especulares con un ángulo de 180º a 270º con un radio de 0,3 a 0,7 el radio de dichos primeros cortes ((1), (2)), en la que un extremo de cada uno de dichos cortes ((4), (5)) está separado por un segundo corte (6) d
