Abstract: The present invention is a disc-type sun blocker which is attached to a vehicle's sun visor for blocking the sun. The sun blocker is rotatably attached to an attachment bracket. The attachment bracket slides along the sun visor for adjustment along the horizontal axis and the rotation of the disc provides adjustment along the vertical axis. The disclosed invention provides a low cost, adjustable sun blocker which selectively extends the blocking of the sun's rays of a vehicle's sun visor.