Abstract: A self-expanding display unit (1) comprising at least one display sheet (3, 5) of a substantially rigid and foldable material having a display face (7,9), a biasing means for bending the display face of the display sheet into a substantially convex shape, and bracing means (2) acting against the biasing means to limit the amount by which the display sheet (3, 5) bends. The display sheet comprises a plurality of panels, delimited from adjacent panels by crease lines. The bracing means (2) comprises a single, substantially rigid and foldable bracing sheet (2) having a plurality of bracing panels (50), each of which is delimited from an adjacent bracing panel by a fold line (52). The fold lines (52) and the crease lines are coincident with each other. Such a device is stable in operation and is efficient to use and manufacture.