Abstract: A body side protector for vehicles equipped with a truck tool box that prevents damage to the side of a truck when the truck tool box is accessed. The protector includes a resilient mat, a flexible magnet, at least one flexible strap, and a mounting bar. The resilient mat has a resilient mat front face, a resilient mat rear face, and a resilient mat top and contains at least one longitudinally disposed mat strap slot opening at the resilient mat top. The resilient mat readily conforms to and protects the specific contour of the side rail. The flexible magnet is attached to the resilient mat rear face so that the resilient mat is readily removably affixed to the specific contour of the side rail. The at least one flexible strap is disposed within a respective one of the at least one longitudinally disposed mat strap slots. Each of the at least one flexible strap has a flexible strap distal end that extends past the resilient mat top and contains a flexible strap distal end aperture.