A synthetic resin bottle with a handle comprising: the synthetic resin bottle, which is a biaxially drawn, blow molded product and has a recessed portion disposed at the rear of a body thereof, and the synthetic resin handle, which is an injection molded product and is fitted in an undercut engagement to the above recessed portion by an insert molding process, said handle comprising: an upper fitting arm and a lower fitting arm disposed at an upper end and a lower end, respectively, of a grip in a vertically long plate shape so that both arms extend forward from the grip, a stopper extending upward from a front end of the upper fitting arm, and a stopper extending upward and/or downward from a front end of the lower fitting arm, characterized in that a ridge or a groove is formed so that it extends rearward from behind a base of at least a stopper of either the upper fitting arm or the lower fitting arm: (i) along a top surface of the upper fitting arm; (ii) along a top surface or an underside surface of the lower fitting arm; (iii) along each of the top surface and the underside surface of the lower fitting arm; (iv) along the top surface of the upper fitting arm, with another ridge or groove along the top or underside surface of the lower fitting arm; or (v) along the top surface of the upper fitting arm, with two more ridges or grooves along the top and underside surfaces of the lower fitting arm, and wherein a connecting passage or passages is/are formed for air release along the ridge or through the groove, by utilizing a space or spaces formed between a body wall and the ridge or groove. the synthetic resin bottle, which is a biaxially drawn, blow molded product and has a recessed portion disposed at the rear of a body thereof, and the synthetic resin handle, which is an injection molded product and is fitted in an undercut engagement to the above recessed portion by an insert molding process, said handle comprising: an upper fitting arm and a lower fitting arm disposed at an upper end and a lower end, respectively, of a grip in a vertically long plate shape so that both arms extend forward from the grip, a stopper extending upward from a front end of the upper fitting arm, and a stopper extending upward and/or downward from a front end of the lower fitting arm, characterized in that a ridge or a groove is formed so that it extends rearward from behind a base of at least a stopper of either the upper fitting arm or the lower fitting arm: (i) along a top surface of the upper fitting arm; (ii) along a top surface or an underside surface of the lower fitting arm; (iii) along each of the top surface and the underside surface of the lower fitting arm; (iv) along the top surface of the upper fitting arm, with another ridge or groove along the top or underside surface of the lower fitting arm; or (v) along the top surface of the upper fitting arm, with two more ridges or grooves along the top and underside surfaces of the lower fitting arm, and an upper fitting arm and a lower fitting arm disposed at an upper end and a lower end, respectively, of a grip in a vertically long plate shape so that both arms extend forward from the grip, a stopper extending upward from a front end of the upper fitting arm, and a stopper extending upward and/or downward from a front end of the lower fitting arm, characterized in that a ridge or a groove is formed so that it extends rearward from behind a base of at least a stopper of either the upper fitting arm or the lower fitting arm: (i) along a top surface of the upper fitting arm; (ii) along a top surface or an underside surface of the lower fitting arm; (iii) along each of the top surface and the underside surface of the lower fitting arm; (iv) along the top surface of the upper fitting arm, with another ridge or groove along the top or underside surface of the lower fitting arm; or (v) along the top surface of the upper fitting arm, with two more ridges or grooves along the top and underside surfaces of the lower fitting arm, and wherein a connecting passage or passages is/are formed for air release along the ridge or through the groove, by utilizing a space or spaces formed between a body wall and the ridge or groove.