The invention relates to a fixing element (33) extending as a flat, particularly lamellar element along a preferred direction (34) and comprising a corrugated sheet metal core (18) as a central component, said core providing the fixing element (33) with the characteristic of being integrally rigid and permanently deformable by hand, and said core being covered by a cover (36, 37). For such a fixing element, a large range of use is achieved in that the corrugations of the corrugated core sheet (18) are oriented substantially parallel to the preferred direction (34), and that means (38, 39) for releasably attaching the fixing element (33) are disposed on the fixing element (33).
