This luggage set includes two suitcases, one in a 20-inch size and the other in a 28-inch size. They are both made with a durable hardside polycarbonate shell that is resistant to impacts and shocks. The suitcases are also lightweight and have a spacious internal capacity. Each suitcase has TSA-approved locks and sturdy YKK zippers. The set also features four 360° rubber spin wheels that make maneuvering the luggage easy.