A trim element having a body and a covering element extending over part of the body. The covering element includes at least two substantially rigid panels connected to one another by a flexible branch forming a bending line of the panels relative to one another and fastened to the body by a fastening edge forming a hinge between the panels and the body, the covering element being deformable around the bending line. The covering element hinges between a retracted position, in which the panels of the covering element are pressed against the body, and a deployed position, in which the panels are moved away from the body, the covering element defining a storage volume with the body in the deployed position.