Abstract: A retainer for securing a flangeless cargo liner within a truck bed compartment such that the top rail of the truck bed compartment is unobstructed. The retainer including a clip portion with outwardly extending divergent legs. The legs being resilient such that they may be squeezed in the direction of the clip portion so that they may be inserted behind the top rail and clipped to the edge of the liner. The fastener is formed from a single piece of wire which is first bent to form the clip portion and then further bent to form the divergent legs. The legs diverge outwardly from the clip portion in both the horizontal and vertical planes to facilitate retention of the liner.