A tailgate device includes a first panel defining first openings, and a second panel defining second openings. The tailgate device also includes a hinge coupled between first ends of the first and second panels and permitting the first and second panels to switch between an extended state and a folded state, and a sleeve receiving uppermost portions of the first ends of the first and second panels and aligned with the hinge to lock the first and second panels in the extended state. The tailgate device also includes a first retention device coupled to a second end of the first panel and to be coupled to a first side portion of a truck bed of a vehicle, and a second retention device coupled to a second end of the second panel and to be coupled to a second side portion of the truck bed of the vehicle.