Abstract: A rear window sunshade for a vehicle is provided. The rear window sunshade having: a frame assembly having a main carrier and a pair of end housings movably attached to opposite ends of the main carrier so that an overall length of the frame assembly can be varied through slidable movement of the pair of end housings with respect to the main carrier; a pair of side guides each being coupled to one of the pair of end housings; and a roller blind operatively coupled to the frame assembly and configured for movement between a stowed position and a deployed position, wherein opposite ends of the roller blind slide within the pair of side guides as the roller blind moves between the stowed and deployed positions.