have the same shape the sixteen zippers 20 are respectively provided on the lateral sides of the eight pieces of face material 11 more specifically the two halves of each zipper 20 are respectively connected to two corresponding lateral sides of two adjacent pieces of face material 11 by pulling the slider 21 of each zipper 20 all the zippers 20 can be closed to join the eight pieces of face material 11 together thus forming the combination bag 10 which has a hollow interior for receiving objects when one of the zippers 20 is opened the opened zipper 20 forms an opening of the combination bag 10 such that objects can be put into or taken out of combination bag 10 through the opening refer to fig4 for a structural diagram of the fourth embodiment of the combination bag 10 of the present invention the combination bag 10 in fig4 is composed of twelve pieces of face material 11 twenty four zippers 20 and two straps 30 all the pieces of face material 11 have the same shape and the two straps 30 are provided on two corresponding pairs of the twelve pieces of face material 11 respectively forming the handles or shoulder straps of the combination bag 10 the straps 30 are adjustable in length or can be detached from the combination bag 10 the twenty four zippers 20 are respectively provided on the lateral sides of the twelve pieces of face material 11 more specifically the two halves of each zipper 20 are respectively connected to two corresponding lateral sides of two adjacent pieces of face material 11 by pulling the slider 21 of each zipper 20 all the zippers 20 can be closed to.