Abstract: A sunshade assembly includes a housing, the housing enclosing a lengthwise interior space and including a lengthwise slot extending between the interior space and an outer surface of the housing; and a sunshade apparatus disposed within the housing and including a sheet of shade material wound upon a roller and unwindable therefrom to an extended position. The sheet of shade material is biased to a wound configuration around the roller and is extendible through the slot. A leading edge of the shade material includes a support bar attached thereto. The support bar is disposed outside of the housing and is configured and dimensioned so that it cannot be withdrawn through the slot into the housing. Also provided herein is a kit for mounting the sunshade assembly to an interior surface of a vehicle.