The NanoVault 300 is made for storing and transporting pistols and other valuables. It's small enough (9.5in X 6.5 in X 1.75in) to fit in a bag or briefcase, under a car seat, or into the drawer of a night stand. It features an easy-to-use combination lock system, so you don't have to worry about keeping up with keys. It's made of 20 gauge steel and lined with 0.5 in thick protective foam.It includes a 1,500 lb test security cable to secure the vault to a fixed object. It meets TSA guidelines for traveling with a firearm in checked luggage.