I am listing a VELO suitcase. It can be easily resized, and in its smallest state, it can be carried on domestic flights. While most expandable suitcases expand sideways, this one expands vertically while remaining slim, which is a great feature as it maintains a natural shape even when expanded. In its largest state, it is capable of handling trips of about 7 days, making it an excellent choice. It's a reliable companion that can be carried on for your outbound journey and can accommodate souvenirs on your return trip. Reference price: ¥77,120 (Amazon) Color: Black Stains/Tears, etc.: None