New, Unused, Limited Edition Delta Airlines Airline US Flights Business Class Exclusive Travel Slippers Set of 2 ◾️Delta Airlines: 2 pairs, Blue ※ Limited edition item available in business class on international flights to the US. ※ The fare for a round-trip business class ticket between Japan and the US is approximately 1 million yen. ※ Difficult to obtain item. ※ Although they are travel slippers, they are well-made. As expected, business class quality.