Change Button Color: Navy Diameter: Approximately 21mm Material: Metal This is a reproduction of the change button used in military items. It is the type that is attached by making a chrysanthemum hole in the fabric. Specially made for national brands, not available commercially. Shipping will be by regular mail, so it may take several days depending on your location. It can also be changed to Yu-packet Mini, but the price will be 550 yen. If you wish, please let us know in the comments. If you need a large quantity or a small quantity, please comment.