Abstract: 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.