To increase the function as one bag 1, and improve the convenience in usage.

When this bag is used as a housing utensil for small articles required to wear a kimono, an upper internal lid 7 is made to confront with a lower external wall 2, and a rear internal wall 8 is made to confront with a front external wall 3, and there is provided a main housing chamber 20, which is surrounded with the lower external wall 2, the front external wall 3, a left external wall 5, a right external wall 6, the upper internal lid 7 and the rear internal wall 8. Then, a rear external wall 4 is made to confront with the rear internal wall 8, and an upper external lid 9 is made to confront with the upper internal lid 7. Fasteners 11, 12 of both of the right and left external walls 5 and 6, and both of the right and left fasteners 11 and 12 of the rear external wall 4 are connected, and the inside of a front tongue piece 10 is brought into contact with the outside of the front external wall 3. When the bag is used as a tote-housing bag, the upper internal lid 7 and the rear internal wall 8 are superposed with the front external wall 3. At the same time, the upper external lid 9 and the front tongue piece 10 are superposed with the rear external wall 4. The upper internal lid 1 and the rear internal wall 8 are made to confront with the upper external lid 9 and the front tongue piece 10. The fasteners 11 and 12 of both of the right and the left external walls 5 and 6, and both of the right and left fasteners 11 and 12 of the rear external wall 4 are connected. Then, an open port 21 is provided between the front external wall 3 and the rear external wall 4, and the left external wall 5 and the right external wall 6.