in this embodiment a vehicle sun shade 10 is provided with peripheral surround 11 of such shape and size as to be positioned with its outer edge 12 contiguous with the periphery of a motor vehicle window different windows of course are of different shapes and in each instance the peripheral frame surround is of such shape and size as to be contiguous with the securing rubbers of the vehicle window for securing purposes the frame surround has outstanding retaining clips 13 of metal secured thereto by rivets 14 this being in accordance with known art flat portions of the clips extend beyond the periphery of the surround 11 and are engageable between the glass and the rubber of a rear window the space defined by the frame surround 11 is itself divided into a series of spaced parallel louvres 16 the cross sectional shape of each louvre including shallow edge flanges 17 which impart considerable stiffness to the louvre such as to reduce the tendency to sag this shape is achieved by a vacuum forming process and subsequently removal of the material to provide the required sight areas the arrow a in fig2 indicates the sight direction of minimum interference by the louvres and is so inclined that when the sun shade is fitted to a vehicle window the direction of minimum interference is nearly horizontal but still sloping downwardly by a small amount which corresponds as closely as possible to the normal inclination of a rear vision mirror of a motor vehicle at the top and also at the bottom the peripheral frame surround is formed to have parallel lands respectively designated 20 and 21 and intermediate these lands.