Abstract: A sun shield is mounted on a bracket that is provided for support of a side-view mirror on a truck cab. The sun shield is mounted horizontally with respect to a ground surface and is located in a position to shield an area just inside the driver's window to protect the arm of the driver from the sun's rays. In the preferred embodiment, the sun shield is made of a high density polymer that is opaque to the sun's rays and is located in a position that does not obstruct the driver's view.