The Thule Revolve Spinner 55cm is a carry-on suitcase made of sturdy polycarbonate. That means the suitcase can take a hit. With a capacity of 33 liters, you'll have enough luggage space for a short weekend trip. Had a bit of a messy flight? Thanks to the elastic packing straps, your belongings will stay neatly in place. You can also comfortably roll the suitcase out in front of you with the double wheels that rotate 360 degrees. You can safely lock the suitcase with the integrated TSA lock on the side.