・100% aluminum material that can be used semi-permanently while keeping your valuables safe from pressure and strong impact in the cargo compartment.
・Aluminum, which uses the highest strength of 5000 series among non-heat treated alloys used in aviation, ships, and chemical plants, is applied not only to the trunk body but also to all external frames.
・The rivet, which connects Shell to Shell, is made of stainless steel stronger than aluminum to enhance durability of the joint.