Whenever you see characters in films delivering precious technology, a dangerous weapon, or loads of cash, they always use metal briefcases to make their transactions. This is not just because these briefcases have a sleek, polished, and intimidating appearance worthy of James Bond. You can carry an aluminum briefcase if it is important to you that your documents, laptop, tablet, or any other items you may be transporting are securely protected. Leather briefcases bend under pressure, causing materials inside to be more vulnerable. A hard briefcase with a metal exterior protects the items inside against outside pressures. Within the large inventory on eBay, there are numerous metal briefcases that not only have durable outer shells, but also feature combination and key locks to provide further protection and security. The insides of the briefcases range from open and spacious to generously padded, and some come with specific compartments for laptops or other devices. You can choose a briefcase that has an iconic silver polished look, or take a more subtle route by choosing a metal case with a flat black matte finish.