a tailgate barrier to be suspended between the sidewalls of a pickup truck includes a flexible barrier having stiffeners at the side edges . at least two connecting members attach the edge stiffeners to the truck sidewalls , allowing horizontal movement of the barrier . biasing members attached to the connecting members force the edge stiffeners towards the respective sidewalls . the biasing members are preferably compression springs . the tailgate barrier eliminate out - of - plane sag . the tailgate barrier is also easily installed and removed without being subjected to wear .