We listened to the troubles from the purchaser from boxopening to the disposal, and devised a shape that everyone can use. ①Regardless of handedness, you can open at once ②Easy to take out because the entire side can be opened ③Can be compactly disposed of by the ruled lines for folding the upper and lower flaps. As a result of improving each, product development reflecting opinions was realized. Furthermore, we developed a unique zipper shape that takes into account safety during transportation.