Issey Miyake: Japanese brand (Issey Miyake). The biggest feature of Issey Miyake's bags is that they can be twisted and shaped at will. This function comes from the appearance developed from the concept of geometric figures. Through proportion calculation and combination, four triangles are spliced ??into a square. Based on this, Issey Miyake bags were created and further arranged into various shapes according to different numbers of triangles.