Abstract: A combination stroller and carseat is provided that allows the stroller to be conveniently converted into a carseat and infant carrier device. The device has a seat shell configured to hold an infant and a coupling knee rotatingly coupled to the seat shell. At least one front wheel is pivotally coupled to the knee so that the front wheel pivots relative to the seat when the knee rotates. Further, at least one rear wheel is pivotally coupled to the knee so that the rear wheel pivots relative to the seat when the knee rotates. A handle is coupled to the knee that is moveable between a first position wherein the handle is extended outwardly from the seat and a second position wherein the handle is retracted within the seat. A releasable locking mechanism is operably coupled to the handle and the knee that is operable to allow movement of the knee.