Abstract: The present invention relates to a bag comprising a closing assembly (100) comprising two complementary elements (110, 120) supported by respective support webs (112, 122) integral with a film (10) at the level of a local zone (114, 124) distant from the corresponding closing element (110, 120) to enable articulation of said support webs (112, 122) on the film (10), said local zones (114, 124) being placed on respective ends opposite the webs (112, 122), respectively on either side of the complementary elements (110, 120), such that one of the articulated webs (112) is directed towards the interior of the bag whereas the other articulated web (122) is directed towards its mouth, characterised in that the support webs (112, 122) have local overthickness (116, 126) at the level of their local respective zone (114, 124) arranged such that a free end of the support webs (112, 122), which is adjacent to the closing elements (110, 120), is at a distance from the wall (10, 20) when the closing assembly (100) is at r