Travelpro FlightCrew 5 21-inch carry-on suitcase. I purchased this as a spare, but I'm selling it because I haven't used it. Used once on a short-haul flight. It has an expander function. The telescoping handle and casters are in good working order. The casters have built-in magnets that help them align to the optimal position. I've included a link to the Travelpro website below. https://aviation.travelpro.com/collections/flightcrew%E2%84%A2-5/products/flightcrew-5-21-expandable-spinner