Truck bed mat

FIG. 1 is a bottom, front and left side perspective view of a truck bed mat showing my new design;

FIG. 2 is a bottom, rear and right side perspective view thereof;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a rear elevational view thereof.

The broken lines and the deemphasized halftone portions within illustrate portions of the truck bed mat that form no part of the claimed design.