1.[ Materials]The rear car window sunshade adopts high-end nylon mesh and perfect edging technology, which is simple, fashionable, beautiful, and durable. The car's rear window sunshade is equipped with suction cups that can tightly adhere to the window glass. 2.[Perfect Design] Our sunshade size is 39 x 20 inches. Before purchasing, please ensure that your car's rear windshield is within the range of 39 inches high and 20 inches wide for better fit! 3.[Blocking Sunlight]Our intelligent design of car glass sunshades can protect passengers and pets from sunlight, protect items inside the car, including children, pets, belongings, and valuables, and keep the car cool. 4.[Convenient for Storage and Carrying] The rear window sunshade of this car adopts a pop-up design, which can be easily folded when not in use, and can be easily twisted and folded into a compact size suitable for travel bags, glove boxes, and even seats.