Dupli-Color Bed Armor Do-It-Yourself Truck Bed Liner is a water-based, rubberized polyurethane coating. It is ideal for protecting truck beds, and all other metal, aluminum, fiberglass, and wood surfaces. Bed Armor is the only do-it-yourself truck bed liner formulated with DuPont Kevlar(R). This special formulation wont chip, fade, or flake and has a textured, black satin finish that provides the ultimate in truck bed protection.