Abstract: A foot rest for attaching to a bottom portion of an object, such as a suitcase, includes a front portion extended forward and downward from an upper portion toward a lower portion for forming an inclined surface in the front portion of the foot rest and for forming a stable supporting structure to the suitcase and for preventing the suitcase from tilting forward and falling down. The inclined surface is preferably concave. The foot rest includes a groove formed in the front and bottom portion for forming a forward extending flange in the front and bottom portion.

Abstract: A wheel device is secured to a suitcase and has one or more oblong holes for slidably receiving a rod, a bracket pivotally secured to the casing for supporting a wheel, and a link pivotally coupling the bracket to the rod. A lever is coupled to the casing and engaged with the rod for moving the rod along the oblong hole of the casing. The bracket and the wheel may be moved outward and inward of the casing when the rod is moved to either of the ends of the oblong hole of the casing. The suitcase has a handle for actuating the lever to move the rod along the oblong hole.