The ABS+PC hard plastic shell provides great benefits for the suitcase. It passes rigorous quality control tests to ensure durability. This luggage is sold separately, but the smaller suitcase can be stored inside the larger one if you purchase multiple. The built-in TSA lock ensures security for your valuables. The airplane spinner wheels and aluminum telescoping handle make maneuvering easy. The interior is fully lined with organizational pockets for packing clothes. Three sizes are available: 20inch, 24inch, and 28inch (only the 28inch is expandable). Origin: China.