The present invention relates to a main or secondary bottle closure device bottle / gourd / bottle (fig.5 n ° 7 and 14/15/16/17/18), isothermal or not, provided with at least d an extension (fig.5 n ° 16), or of an attached part, external or internal (fig.5 n ° 16) to the edge in material compatible with the food safety (fig.5 n ° 15) allowing the protection , the hygiene and the tightness of the part of the containers put in mouth (fig.5 n ° 6) of a bottle, a gourd or a bottle when the principal device of closing (fig.5 n ° 7 and 14/15/16/17/18) of the bottle / bottle / bottle holder is closed. It is characterized in that it consists of at least one rigid or flexible piece (fig.5 n ° 7 and 14) intended to cover the part of the containers placed in the mouth (fig.5 n ° 6 and 7) and at least partially the lateral flanks (FIG. 5, No. 14) of the bottle / flask / bottle holder and comprising holding means against said bottle / flask / bottle holder (FIG. 5, No. 5) located at two points diametrically opposite on a horizontal and median line, positioned above the bottle, the gourd or the bottle (fig.5 n ° 6). The present invention makes it possible to propose a solution for protection, hygiene and sealing for the portion of the containers put in the mouth (FIG. 5, No. 6) when they are not used and when they are at their disposal. inside a bottle holder / flask / bottle (fig.5 n ° 5), isothermal or not, closed in its principal means of closure (fig.5 n ° 7 and n ° 14/15/16/17/18) , by means of retaining means (fig.5 n ° 17), of origin or reported, provided with an extension, or an attached part, external or internal (fig.5 n ° 16). Nos. 2/3 recalls the location and characteristics of the retaining and retaining device of Patent No. 13/00692. La présente invention se rapporte à un dispositif principal ou secondaire de fermeture de porte-biberon/gourde/bouteille (fig.5 n°7 et n° 14/15/16/17/18), isotherme ou non, muni au moins d'un prolongement (fig.5 n°16), ou d'un
