Abstract: A portable instant shade device provides protection against glaring sunlight at the interior of motor vehicles or boats. The main body of the device consists of a cylindrical casing housing the shade and the shade roller, which casing has a longitudinal slot at the bottom in which the shade passes through. At each end of the cylindrical casing is a cap which receives the end of the shade roller, holds the foldable grooved arms and provides attachment for the mounting means. The shade roller is a usual spring type, operated as an ordinary window shade. The portable instant shade may be easily mounted detachably with suction cups or any other ordinary clamping device to assure adjustability to any desired position for the purpose of shading the interior of motor vehicles or boats.