Description Truck Bed Liner; Herculiner Truck Bed Liners are the durable and inexpensive solution for tough, permanent truck bed protection! In just three easy steps, your truck bed is covered with a textured polyurethane coating just like professional spray-on liners, but for hundreds of dollars less. And it isn't just for truck beds. Herculiner can be applied to concrete, plastic, rubber, metal, wood, or fiberglass - just about anywhere where a skid-resistant surface is needed!