Luggage comprising a rigid shell defining an upper surface to support a person in a seated position thereon, and side surfaces extending from said upper surface, wherein the luggage further comprises a mechanism (2, 3, 4) attached to and surrounding the rigid shell that unfolds so that the rigid shell and the mechanism together form a wheelchair, wherein the mechanism comprises: a pair of parallel rails fixed to each other in spaced relation, each rail having a front and a rear wheel (9a, 9b) attached at opposite ends thereof, a pair of lower elongate supports, each lower elongate support having an end mounted to a corresponding rail, each lower elongate support being attached to a corresponding side surface of the rigid shell such that the shell is received between said lower elongate supports, wherein each lower elongate support pivots together with the shell between a stowed position in which each elongate support extends in a direction along the rail to which it is mounted with the shell being received between said parallel rails and with the front and rear wheels depending from each rail positioned alongside a corresponding side surface of said shell, and a deployed position, in which each elongate support extends upwardly from said rail such that the wheels now extend beneath the shell and are positionable in contact with the ground with said upper surface of the shell facing upward to enable a person to sit on said upper surface and be supported by said shell whilst being moved along the ground on said wheels; and wherein the luggage further comprises a pair of upper elongate supports, an upper elongate support being pivotally mounted to an upper end of a corresponding lower elongate support, and a backrest extending between each upper elongate support, the upper and lower elongate supports being foldable against each other such that the backrest lies against the shell in a stowed position, the upper elongate supports being lockable in an erected position so that a person sitting on the upper support surface can lean on the backrest. a pair of parallel rails fixed to each other in spaced relation, each rail having a front and a rear wheel (9a, 9b) attached at opposite ends thereof, a pair of lower elongate supports, each lower elongate support having an end mounted to a corresponding rail, each lower elongate support being attached to a corresponding side surface of the rigid shell such that the shell is received between said lower elongate supports, wherein each lower elongate support pivots together with the shell between a stowed position in which each elongate support extends in a direction along the rail to which it is mounted with the shell being received between said parallel rails and with the front and rear wheels depending from each rail positioned alongside a corresponding side surface of said shell, and a deployed position, in which each elongate support extends upwardly from said rail such that the wheels now extend beneath the shell and are positionable in contact with the ground with said upper surface of the shell facing upward to enable a person to sit on said upper surface and be supported by said shell whilst being moved along the ground on said wheels; and wherein the luggage further comprises a pair of upper elongate supports, an upper elongate support being pivotally mounted to an upper end of a corresponding lower elongate support, and a backrest extending between each upper elongate support, the upper and lower elongate supports being foldable against each other such that the backrest lies against the shell in a stowed position, the upper elongate supports being lockable in an erected position so that a person sitting on the upper support surface can lean on the backrest.