Collapsible seat

The folding seat has a sitting section (2), a back section (1) and a support structure, whereby the sitting section is pivot-connected to a lower section (4) of the back section. The back section has two hinge axes which are movable in tracks with regard to the support structure. The first hinge axis (10) with the seat in its upright position lies higher than the second hinge axis, and its track (13) from the front rearwards slopes much than the track (7) of the second hinge axis.