A door-trim panel for a vehicle includes an armrest and a top roll extending upwardly from the armrest to an upper end. The upper end has an inboard portion and an outboard portion and the upper end is elongated along a longitudinal axis. The top roll includes pairs of ribs spaced from each other along the longitudinal axis. The pairs of ribs include an inboard rib extending from the inboard portion toward the outboard portion to an outboard end. The pairs of ribs include an outboard rib adjacent to and spaced from the inboard rib of that pair. The outboard rib extends from the outboard portion toward the inboard portion to an inboard end of the outboard rib. The inboard ribs and outboard ribs are elongated transverse to the longitudinal axis. The inboard end and the outboard end are spaced from the inboard portion of the top roll.