The grain surface is robust, very useful and you save the painting cost. • ABS has a perfect balance of properties: strong, chemical- and temperature resistant, rust free, it reshapes after an impact. • Made from a single piece of ABS, so it has no connection joints, sharp edges or weak areas. • Due to its shape, the tonneau cover reduces the wind flow inside the truck, and it results fuel-savings. • The installation is recommended with an over rail bed liner or rail guard, but it can be installed also with an under rail bed liner or without bed liner.