Floor panel, with a horizontally and vertically active locking system allowing that two of such floor panels can be connected to each other at said sides by providing one of these floor panels, by means of a downward movement, in the other floor panel; wherein the vertically active locking system includes a locking element in the form of an insert; wherein this locking element includes at least a pivotable lock-up body. The pivotable lock-up body includes a support portion which is rotatable against a support surface pertaining to the floor panel concerned, and more particularly in a seat.