A piece of luggage is provided. A main body and an expandable body of the luggage are connected to each other by a collapsible portion. The luggage has a cover pivotably connected to the expandable body. A first half of a zipper is fixed to the expandable body and a second half of the zipper is fixed to the cover. The engagement of the first half and the second half closes the cover to the expandable body, and thus a substantially enclosed space is defined by the main body, the expandable body and the cover. The luggage also has multiple rotational wheels mounted to the main body and/or the expandable body. The luggage stands on the rotational wheels and is rotatable with respect to one or more predetermined axes through these wheels.
