Abstract: A box pallet (1) comprising at least one base (4) and an articulated belt (5), the box pallet (1) being convertible between a loading configuration in which the belt (5) is unfolded and erected on the base (4) so as to form a storage volume and an empty transport configuration in which the belt (5) is folded and laid flat on the base (4); characterised in that it comprises at least one articulated bottom panel (10) that bears on the base (4) and is capable of forming a wedge for a bulky object, such as a motor vehicle seat, that needs to be loaded into the storage volume.