the embodied invention is a large , horizontal sunshade with vertical shading curtains around the perimeter that is securely attached to the roof of a vehicle . the attachment means comprises a semi - permanent magnetic vehicle mount assembly that is attached to the vehicle roof and a matching snap ring that secures the sunscreen in place . the snap ring is magnetically attached to the car mount assembly using strong magnets that prevent the sunscreen from blowing away in the event of a wind . the sunscreen assembly incorporates reinforcing ribs in a way that allows the sunscreen assembly to be folded and stored compactly . the sunscreen assembly is removable by a simple rotation .