Approved by FAA, DOT and TSA to carry a butane filled lighter to be carried on domestic flights in your checked baggage. Unscrew the top of the transpack, put your fuelled lighter in the foam, put the top back on and put it in your checked luggage.. its that simple. DOT and TSA stamp and code numbers right on the tranzpack in case if TSA questions it. Hard polycarbonate exterior with foam inside. The foam liner has an opening that will flex to accommodate the size and shape of most pocket-sized lighters. The case is also waterproof and buoyant, so if you're traveling by boat, your lighter is safe.