Most of the bags in the market are mainly made of plastic support, which is easy to deform or cause many creases in the appearance after short-term use. At the same time, the plastic support structure is not environmentally friendly, as it is difficult to be recycled and also causes environmental pollution. Therefore, we hope that the durability of aluminum can prolong the service life of bags, and the recyclability of aluminum can also reduce the burden on the environment. Finally, we hope that the cross-domain combination of sheet metal and leather can bring new markets for the industry.