To provide a purse enhancing its attraction by effectively using two types of folding methods and surely retaining its flap unopened even when having a great deal of storage quantity.

In a first folding state where a first flap 2 is folded and stacked on the outside of a second flap 3, this purse can be retained in an opening prevented state where a lock part 11 inside the first flap 2 and a lock part 13 outside the second flap 3 are locked to each other. In a second folding state where the second flap 3 is folded and stacked on the outside of the first flap 2, this purse can be retained in the opening prevented state where an opening prevention member 5 whose one end is fixed to a fixing part 20 in the outside face of a purse body 1 is extended across the tip of the second flap 3 and a lock part 6 in the other end of the opening prevention member 5 is locked to the lock part 13 in the outside of the second flap 3.