PURPOSE: To obtain a handy smoke stop bag which can be stored in a card casing that is widely used being carried by a person by securing two cards opposing together in the vicinity of the opening end of a bag, and by folding the bag between the two cards so as to fit the bag into the card casing.

CONSTITUTION: A bag 1 made of highly transparent synthetic resin film such as a polypropylene film or the like, is made to be as thin as possible so as to be handy for carrying the same. Two cards 2 are secured to the open end side of the bag 1. Thus secured two cards 2 opposes each other in the vicinity of the open end of the bag 1. Accordingly, upon use, the two card are held by the hands, respectively, and therefore can be enlarged. When the bag 1 is folded, it is folded into a small sized sufficient to be clamped between the two cards 2, and is then clamped between the cards 2. Thus, it is possible to carry the bag between the cards which is set in a card casing.