The present invention relates to improved light bar cover for LED light bars. The presently disclosed light bar covers may cover the full circumference and length of a light bar and may include a multi-functional tool for easing the installation or removal. While installed, the light bar cover protects the light bar from various damages such as debris or the elements. The multi-function tool may be used to assist in the removal and installation of the cover when mounted in hard to access location. In various embodiments the multi-function tool may be used to deploy the cover, provide rigidity to the cover, and/or actuate a fastener for the cover.